NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR
THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN COMPLIANCE WITH
APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.

                                SAFESCIENCE, INC.

                                     WARRANT
                                     -------

Warrant No.                                                Dated: March 29, 2000


         SafeScience, Inc., a Nevada corporation (the "Company"), hereby
certifies that, for value received, ___________________., or its registered
assigns ("Holder"), is entitled, subject to the terms set forth below, to
purchase from the Company up to a total of 54,498 shares of common stock, $.01
par value per share (the "Common Stock"), of the Company (each such share, a
"Warrant Share" and all such shares, the "Warrant Shares") at an exercise price
equal to $15.98 per share (as adjusted from time to time as provided in Section
8, the "Exercise Price"), at any time and from time to time from and after the
date hereof and through and including March 29, 2005 (the "Expiration Date"),
and subject to the following terms and conditions:

     1. Registration of Warrant. The Company shall register this Warrant, upon
records to be maintained by the Company for that purpose (the "Warrant
Register"), in the name of the record Holder hereof from time to time. The
Company may deem and treat the registered Holder of this Warrant as the absolute
owner hereof for the purpose of any exercise hereof or any distribution to the
Holder, and for all other purposes, and the Company shall not be affected by
notice to the contrary.

     2. Registration of Transfers and Exchanges.

         (a) The Company shall register the transfer of any portion of this
Warrant in the Warrant Register, upon surrender of this Warrant, with the Form
of Assignment attached hereto duly completed and signed, to the Transfer Agent
or to the Company at its address for notice set forth in Section 12. Upon any
such registration or transfer, a new warrant to purchase Common Stock, in
substantially the form of this Warrant (any such new warrant, a "New Warrant"),
evidencing the portion of this Warrant so transferred shall be issued to the
transferee and a New Warrant evidencing the remaining portion of this Warrant
not so transferred, if any, shall be issued to the transferring Holder. The
acceptance of the New Warrant by the transferee thereof shall be deemed the
acceptance of such transferee of all of the rights and obligations of a holder
of a Warrant.

<PAGE>

         (b) This Warrant is exchangeable, upon the surrender hereof by the
Holder to the office of the Company at its address for notice set forth in
Section 12 for one or more New Warrants, evidencing in the aggregate the right
to purchase the number of Warrant Shares which may then be purchased hereunder.
Any such New Warrant will be dated the date of such exchange.

     3. Duration and Exercise of Warrants.

         (a) This Warrant shall be exercisable by the registered Holder on any
business day before 6:30 P.M., New York City time, at any time and from time to
time on or after the date hereof to and including the Expiration Date. At 6:30
P.M., New York City time on the Expiration Date, the portion of this Warrant not
exercised prior thereto shall be and become void and of no value. Prior to the
Expiration Date, the Company may not call or otherwise redeem this Warrant
without the prior written consent of the Holder.

         (b) Upon surrender of this Warrant, with the Form of Election to
Purchase attached hereto duly completed and signed, to the Company at its
address for notice set forth in Section 12 and upon payment of the Exercise
Price multiplied by the number of Warrant Shares that the Holder intends to
purchase hereunder, in the manner provided hereunder, all as specified by the
Holder in the Form of Election to Purchase, the Company shall promptly (but in
no event later than four (4) business days after the Date of Exercise (as
defined herein)) issue or cause to be issued and cause to be delivered to or
upon the written order of the Holder and in such name or names as the Holder may
designate, a certificate for the Warrant Shares issuable upon such exercise,
free of restrictive legends except (i) either in the event that a registration
statement covering the resale of the Warrant Shares and naming the Holder as a
selling stockholder thereunder is not then effective or the Warrant Shares are
not freely transferable without volume restrictions pursuant to Rule 144(k)
promulgated under the Securities Act of 1933, as amended (the "Securities Act"),
or (ii) if this Warrant shall have been issued pursuant to a written agreement
between the original Holder and the Company, as required by such agreement. Any
person so designated by the Holder to receive Warrant Shares shall be deemed to
have become holder of record of such Warrant Shares as of the Date of Exercise
of this Warrant. The Company shall, upon request of the Holder, if available,
use its best efforts to deliver Warrant Shares hereunder electronically through
the Depository Trust Corporation or another established clearing corporation
performing similar functions.

         A "Date of Exercise" means the date on which the Company shall have
received (i) this Warrant (or any New Warrant, as applicable), with the Form of
Election to Purchase attached hereto (or attached to such New Warrant)
appropriately completed and duly signed, and (ii) payment of the Exercise Price
for the number of Warrant Shares so indicated by the holder hereof to be
purchased.

         (c) This Warrant shall be exercisable, either in its entirety or, from
time to time, for a portion of the number of Warrant Shares. If less than all of
the Warrant Shares which may be purchased under this Warrant are exercised at
any time, the Company shall issue or cause


<PAGE>

to be issued, at its expense, a New Warrant evidencing the right to purchase the
remaining number of Warrant Shares for which no exercise has been evidenced by
this Warrant.

     4. Piggyback Registration Rights. During the Effectiveness Period (as
defined in the Registration Rights Agreement, of even date herewith, between the
Company and the original Holder), the Company may not file any registration
statement with the Securities and Exchange Commission (other than registration
statements of the Company filed on Form S-8 or Form S-4, each as promulgated
under the Securities Act, pursuant to which the Company is registering
securities pursuant to a Company employee benefit plan or pursuant to a merger,
acquisition or similar transaction including supplements thereto, but not
additionally filed registration statements in respect of such securities) at any
time when there is not an effective registration statement covering the resale
of the Warrant Shares and naming the Holder as a selling stockholder thereunder,
unless the Company provides the Holder with not less than 15 days notice of its
intention to file such registration statement and provides the Holder the option
to include any or all of the applicable Warrant Shares therein. The piggyback
registration rights granted to the Holder pursuant to this Section shall
continue until all of the Holder's Warrant Shares have been sold in accordance
with an effective registration statement or upon the Expiration Date. The
Company will pay all registration expenses in connection therewith.

     5. Payment of Taxes. The Company will pay all documentary stamp taxes
attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

     6. Replacement of Warrant. If this Warrant is mutilated, lost, stolen or
destroyed, the Company shall issue or cause to be issued in exchange and
substitution for and upon cancellation hereof, or in lieu of and substitution
for this Warrant, a New Warrant, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and indemnity, if
requested, satisfactory to it. Applicants for a New Warrant under such
circumstances shall also comply with such other reasonable regulations and
procedures and pay such other reasonable charges as the Company may prescribe.

     7. Reservation of Warrant Shares. The Company covenants that it will at all
times reserve and keep available out of the aggregate of its authorized but
unissued Common Stock, solely for the purpose of enabling it to issue Warrant
Shares upon exercise of this Warrant as herein provided, the number of Warrant
Shares which are then issuable and deliverable upon the exercise of this entire
Warrant, free from preemptive rights or any other actual contingent purchase
rights of persons other than the Holder (taking into account the adjustments and
restrictions of Section 8). The Company covenants that all Warrant Shares that
shall be so issuable and deliverable shall, upon issuance and the payment of the
applicable Exercise Price in


<PAGE>

accordance with the terms hereof, be duly and validly authorized, issued and
fully paid and nonassessable.

     8. Certain Adjustments. The Exercise Price and number of Warrant Shares
issuable upon exercise of this Warrant are subject to adjustment from time to
time as set forth in this Section 8. Upon each such adjustment of the Exercise
Price pursuant to this Section 8, the Holder shall thereafter prior to the
Expiration Date be entitled to purchase, at the Exercise Price resulting from
such adjustment, the number of Warrant Shares obtained by multiplying the
Exercise Price in effect immediately prior to such adjustment by the number of
Warrant Shares issuable upon exercise of this Warrant immediately prior to such
adjustment and dividing the product thereof by the Exercise Price resulting from
such adjustment.

         (a) If the Company, at any time while this Warrant is outstanding, (i)
shall pay a stock dividend (except scheduled dividends paid on outstanding
preferred stock as of the date hereof which contain a stated dividend rate) or
otherwise make a distribution or distributions on shares of its Common Stock or
on any other class of capital stock payable in shares of Common Stock, (ii)
subdivide outstanding shares of Common Stock into a larger number of shares, or
(iii) combine outstanding shares of Common Stock into a smaller number of
shares, the Exercise Price shall be multiplied by a fraction of which the
numerator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding before such event and of which the denominator shall
be the number of shares of Common Stock (excluding treasury shares, if any)
outstanding after such event. Any adjustment made pursuant to this Section shall
become effective immediately after the record date for the determination of
stockholders entitled to receive such dividend or distribution and shall become
effective immediately after the effective date in the case of a subdivision or
combination, and shall apply to successive subdivisions and combinations.

         (b) In case of any reclassification of the Common Stock or any
compulsory share exchange pursuant to which the Common Stock is converted into
other securities, cash or property, then the Holder shall have the right
thereafter to exercise this Warrant only into the shares of stock and other
securities and property receivable upon or deemed to be held by holders of
Common Stock following such reclassification or share exchange, and the Holder
shall be entitled upon such event to receive such amount of securities or
property equal to the amount of Warrant Shares such Holder would have been
entitled to had such Holder exercised this Warrant immediately prior to such
reclassification or share exchange. The terms of any such reclassification or
share exchange shall include such terms so as to continue to give to the Holder
the right to receive the securities or property set forth in this Section 8(b)
upon any exercise following any such reclassification or share exchange.

         (c) If the Company, at any time while this Warrant is outstanding,
shall distribute to all holders of Common Stock (and not to holders of this
Warrant) evidences of its indebtedness or assets or rights or warrants to
subscribe for or purchase any security (excluding those referred to in Sections
8(a), (b) and (d)), then in each such case the Exercise Price shall be
determined by multiplying the Exercise Price in effect immediately prior to the
record date fixed


<PAGE>

for determination of stockholders entitled to receive such distribution by a
fraction of which the denominator shall be the Exercise Price determined as of
the record date mentioned above, and of which the numerator shall be such
Exercise Price on such record date less the then fair market value at such
record date of the portion of such assets or evidence of indebtedness so
distributed applicable to one outstanding share of Common Stock as determined by
the Company's independent certified public accountants that regularly examines
the financial statements of the Company (an "Appraiser").

         (d) Except for (i) the issuance of shares of Common Stock and warrants
to purchase Common Stock for an aggregate purchase price of up to $5,000,000
pursuant to a private placement memorandum dated March 10, 2000 and (ii) the
issuance of shares of Common Stock pursuant to the Adjustable Warrants (as
defined in the Securities Purchase Agreement dated the date hereof to which the
original Holder and the Company are parties), the Company or any subsidiary
thereof, as applicable with respect to Common Stock Equivalents (as defined
below), at any time while this Warrant is outstanding, shall issue shares of
Common Stock or rights, warrants, options or other securities or debt that is
convertible into or exchangeable for shares of Common Stock ("Common Stock
Equivalents"), entitling any person to acquire shares of Common Stock at a price
per share less than the Exercise Price (if the holder of the Common Stock or
Common Stock Equivalent so issued shall at any time, whether by operation of
purchase price adjustments, reset provisions, floating conversion, exercise or
exchange prices or otherwise, or due to warrants, options or rights issued in
connection with such issuance, be entitled to receive shares of Common Stock at
a price less than the Exercise Price, such issuance shall be deemed to have
occurred for less than the Exercise Price), then the Exercise Price shall be
multiplied by a fraction, the numerator of which shall be the number of shares
of Common Stock outstanding immediately prior to the issuance of such Common
Stock or such Common Stock Equivalents plus the number of shares of Common Stock
which the offering price for such shares of Common Stock or Common Stock
Equivalents would purchase at the Exercise Price, and the denominator of which
shall be the sum of the number of shares of Common Stock outstanding immediately
prior to such issuance plus the number of shares of Common Stock so issued or
issuable, provided, that for purposes hereof, all shares of Common Stock that
are issuable upon conversion, exercise or exchange of Common Stock Equivalents
shall be deemed outstanding immediately after the issuance of such Common Stock
Equivalents. Such adjustment shall be made whenever such Common Stock or Common
Stock Equivalents are issued. However, upon the expiration of any Common Stock
Equivalents the issuance of which resulted in an adjustment in the Exercise
Price pursuant to this Section, if any such Common Stock Equivalents shall
expire and shall not have been exercised, the Exercise Price shall immediately
upon such expiration be recomputed and effective immediately upon such
expiration be increased to the price which it would have been (but reflecting
any other adjustments in the Exercise Price made pursuant to the provisions of
this Section after the issuance of such Common Stock Equivalents) had the
adjustment of the Exercise Price made upon the issuance of such Common Stock
Equivalents been made on the basis of offering for subscription or purchase only
that number of shares of the Common Stock actually purchased upon the exercise
of such Common Stock Equivalents actually exercised.

<PAGE>


         (e) In case of any (1) merger or consolidation of the Company with or
into another Person, or (2) sale by the Company of more than one-half of the
assets of the Company (on a book value basis) in one or a series of related
transactions, the Holder shall have the right thereafter to exercise this
Warrant for the shares of stock and other securities, cash and property
receivable upon or deemed to be held by holders of Common Stock following such
merger, consolidation or sale, and the Holder shall be entitled upon such event
or series of related events to receive such amount of securities, cash and
property as the Common Stock for which this Warrant could have been exercised
immediately prior to such merger, consolidation or sales would have been
entitled. The terms of any such merger, sale or consolidation shall include such
terms so as continue to give the Holder the right to receive the securities,
cash and property set forth in this Section upon any conversion or redemption
following such event. This provision shall similarly apply to successive such
events.

         (f) For the purposes of this Section 8, the following clauses shall
also be applicable:

               (i)  Record Date. In case the Company shall take a record of the
                    holders of its Common Stock for the purpose of entitling
                    them (A) to receive a dividend or other distribution payable
                    in Common Stock or in securities convertible or exchangeable
                    into shares of Common Stock, or (B) to subscribe for or
                    purchase Common Stock or securities convertible or
                    exchangeable into shares of Common Stock, then such record
                    date shall be deemed to be the date of the issue or sale of
                    the shares of Common Stock deemed to have been issued or
                    sold upon the declaration of such dividend or the making of
                    such other distribution or the date of the granting of such
                    right of subscription or purchase, as the case may be.

               (ii) Treasury Shares. The number of shares of Common Stock
                    outstanding at any given time shall not include shares owned
                    or held by or for the account of the Company, and the
                    disposition of any such shares shall be considered an issue
                    or sale of Common Stock.

         (g) All calculations under this Section 8 shall be made to the nearest
cent or the nearest 1/100th of a share, as the case may be.

         (h) Whenever the Exercise Price is adjusted pursuant to Section 8(c)
above, the Holder, after receipt of the determination by the Appraiser, shall
have the right to select an additional appraiser (which shall be a nationally
recognized accounting firm), in which case the adjustment shall be equal to the
average of the adjustments recommended by each of the Appraiser and such
appraiser. The Holder shall promptly mail or cause to be mailed to the Company,
a notice setting forth the Exercise Price after such adjustment and setting
forth a brief


<PAGE>

statement of the facts requiring such adjustment. Such adjustment shall become
effective immediately after the record date mentioned above.

         (i) If:

               (i)  the Company shall declare a dividend (or any other
                    distribution) on its Common Stock; or

               (ii) the Company shall declare a special nonrecurring cash
                    dividend on or a redemption of its Common Stock; or

               (iii) the Company shall authorize the granting to all holders of
                    the Common Stock rights or warrants to subscribe for or
                    purchase any shares of capital stock of any class or of any
                    rights; or

               (iv) the approval of any stockholders of the Company shall be
                    required in connection with any reclassification of the
                    Common Stock, any consolidation or merger to which the
                    Company is a party, any sale or transfer of all or
                    substantially all of the assets of the Company, or any
                    compulsory share exchange whereby the Common Stock is
                    converted into other securities, cash or property; or

               (v)  the Company shall authorize the voluntary dissolution,
                    liquidation or winding up of the affairs of the Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least 20 calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected that holders of Common Stock of
record shall be entitled to exchange their shares of Common Stock for
securities, cash or other property deliverable upon such reclassification,
consolidation, merger, sale, transfer, share exchange, dissolution, liquidation
or winding up; provided, however, that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the
corporate action required to be specified in such notice.

     9. Payment of Exercise Price. The Holder shall pay the Exercise Price in
one of the following manners:

         (a) Cash Exercise. The Holder may deliver immediately available funds;
or

<PAGE>

         (b) Cashless Exercise. The Holder may surrender this Warrant to the
Company together with a notice of cashless exercise, in which event the Company
shall issue to the Holder the number of Warrant Shares determined as follows:

                         X = Y [(A-B)/A]
         where:
                         X = the number of Warrant Shares to be issued to the
                         Holder.

                         Y = the number of Warrant Shares with
                         respect to which this Warrant is being
                         exercised.

                         A = the average of the closing sale prices
                         of the Common Stock for the five (5) trading
                         days immediately prior to (but not
                         including) the Date of Exercise.

                         B = the Exercise Price.

For purposes of Rule 144 promulgated under the Securities Act, it is intended,
understood and acknowledged that the Warrant Shares issued in a cashless
exercise transaction shall be deemed to have been acquired by the Holder, and
the holding period for the Warrant Shares shall be deemed to have been
commenced, on the issue date.

     10. Certain Exercise Restrictions

         (a) A Holder may not exercise this Warrant to the extent such exercise
would result in the Holder, together with any affiliate thereof, beneficially
owning (as determined in accordance with Section 13(d) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act") and the rules promulgated
thereunder) in excess of 4.999% of the then issued and outstanding shares of
Common Stock, including shares issuable upon such exercise and held by such
Holder after application of this Section. Since the Holder will not be obligated
to report to the Company the number of shares of Common Stock it may hold at the
time of an exercise hereunder, unless the exercise at issue would result in the
issuance of shares of Common Stock in excess of 4.999% of the then outstanding
shares of Common Stock without regard to any other shares which may be
beneficially owned by the Holder or an affiliate thereof, the Holder shall have
the authority and obligation to determine whether the restriction contained in
this Section will limit any particular exercise hereunder and to the extent that
the Holder determines that the limitation contained in this Section applies, the
determination of which portion of this Warrant is exercisable shall be the
responsibility and obligation of the Holder. If the Holder has delivered a Form
of Election to Purchase for a number of Warrant Shares that, without regard to
any other shares that the Holder or its affiliates may beneficially own, would
result in the issuance in excess of the permitted amount hereunder, the Company
shall notify the Holder of this fact and shall honor the exercise for the
maximum portion of this Warrant permitted to be exercised on such Date of
Exercise in accordance with the periods described herein and, at the option of
the Holder, either keep the portion of the Warrant tendered for exercise in
excess of the permitted amount hereunder for future exercises or return such
excess portion of the Warrant to the Holder.


<PAGE>

The provisions of this Section may be waived by a Holder (but only as to itself
and not to any other Holder) upon not less than 61 days prior notice to the
Company. Other Holders shall be unaffected by any such waiver.

         (b) A Holder may not exercise this Warrant to the extent such exercise
would result in the Holder, together with any affiliate thereof, beneficially
owning (as determined in accordance with Section 13(d) of the Exchange Act and
the rules promulgated thereunder) in excess of 9.999% of the then issued and
outstanding shares of Common Stock, including shares issuable upon such exercise
and held by such Holder after application of this Section. Since the Holder will
not be obligated to report to the Company the number of shares of Common Stock
it may hold at the time of an exercise hereunder, unless the exercise at issue
would result in the issuance of shares of Common Stock in excess of 9.999% of
the then outstanding shares of Common Stock without regard to any other shares
which may be beneficially owned by the Holder or an affiliate thereof, the
Holder shall have the authority and obligation to determine whether the
restriction contained in this Section will limit any particular exercise
hereunder and to the extent that the Holder determines that the limitation
contained in this Section applies, the determination of which portion of this
Warrant is exercisable shall be the responsibility and obligation of the Holder.
If the Holder has delivered a Form of Election to Purchase for a number of
Warrant Shares that, without regard to any other shares that the Holder or its
affiliates may beneficially own, would result in the issuance in excess of the
permitted amount hereunder, the Company shall notify the Holder of this fact and
shall honor the exercise for the maximum portion of this Warrant permitted to be
exercised on such Date of Exercise in accordance with the periods described
herein and, at the option of the Holder, either keep the portion of the Warrant
tendered for exercise in excess of the permitted amount hereunder for future
exercises or return such excess portion of the Warrant to the Holder. The
provisions of this Section may be waived by a Holder (but only as to itself and
not to any other Holder) upon not less than 61 days prior notice to the Company.
Other Holders shall be unaffected by any such waiver.

     11. Fractional Shares. The Company shall not be required to issue or cause
to be issued fractional Warrant Shares on the exercise of this Warrant. The
number of full Warrant Shares which shall be issuable upon the exercise of this
Warrant shall be computed on the basis of the aggregate number of Warrant Shares
purchasable on exercise of this Warrant so presented. If any fraction of a
Warrant Share would, except for the provisions of this Section, be issuable on
the exercise of this Warrant, the Company shall pay an amount in cash equal to
the Exercise Price multiplied by such fraction.

     12. Notices. Any and all notices or other communications or deliveries
hereunder shall be in writing and shall be deemed given and effective on the
earliest of (i) the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section prior to 6:30 p.m. (New York City time) on a business day, (ii) the
business day after the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section later than 6:30 p.m. (New York City time) on any date and earlier than
11:59 p.m. (New York City time) on such date, (iii) the business day following
the date of mailing, if sent by nationally recognized


<PAGE>

overnight courier service, or (iv) upon actual receipt by the party to whom such
notice is required to be given. The addresses for such communications shall be:
(i) if to the Company, to Park Square Building, 31 St. James Avenue, 8th Floor,
Boston, MA 02116, facsimile: 617-422-0675, attention Chief Financial Officer, or
(ii) if to the Holder, to the Holder at the address or facsimile number
appearing on the Warrant Register or such other address or facsimile number as
the Holder may provide to the Company in accordance with this Section.

     13. Warrant Agent. The Company shall serve as warrant agent under this
Warrant. Upon thirty (30) days' notice to the Holder, the Company may appoint a
new warrant agent. Any corporation into which the Company or any new warrant
agent may be merged or any corporation resulting from any consolidation to which
the Company or any new warrant agent shall be a party or any corporation to
which the Company or any new warrant agent transfers substantially all of its
corporate trust or shareholders services business shall be a successor warrant
agent under this Warrant without any further act. Any such successor warrant
agent shall promptly cause notice of its succession as warrant agent to be
mailed (by first class mail, postage prepaid) to the Holder at the Holder's last
address as shown on the Warrant Register.

     14. Miscellaneous.

         (a) This Warrant shall be binding on and inure to the benefit of the
parties hereto and their respective successors and assigns. This Warrant may be
amended only in writing signed by the Company and the Holder and their
successors and assigns.

         (b) Subject to Section 14(a), above, nothing in this Warrant shall be
construed to give to any person or corporation other than the Company and the
Holder any legal or equitable right, remedy or cause under this Warrant. This
Warrant shall inure to the sole and exclusive benefit of the Company and the
Holder.

         (c) The corporate laws of the State of Nevada shall govern all issues
concerning the relative rights of the Company and its stockholders. All other
questions concerning the construction, validity, enforcement and interpretation
of this Warrant shall be governed by and construed and enforced in accordance
with the internal laws of the State of New York, without regard to the
principles of conflicts of law thereof. The Company and the Holder hereby
irrevocably submit to the exclusive jurisdiction of the state and federal courts
sitting in the City of New York, borough of Manhattan, for the adjudication of
any dispute hereunder or in connection herewith or with any transaction
contemplated hereby or discussed herein, and hereby irrevocably waives, and
agrees not to assert in any suit, action or proceeding, any claim that it is not
personally subject to the jurisdiction of any such court, or that such suit,
action or proceeding is improper. Each of the Company and the Holder hereby
irrevocably waives personal service of process and consents to process being
served in any such suit, action or proceeding by receiving a copy thereof sent
to the Company at the address in effect for notices to it under this instrument
and agrees that such service shall constitute good and sufficient service of
process and notice thereof. Nothing contained herein shall be deemed to limit in
any way any right to serve process in any manner permitted by law.

<PAGE>

         (d) The headings herein are for convenience only, do not constitute a
part of this Warrant and shall not be deemed to limit or affect any of the
provisions hereof.

         (e) In case any one or more of the provisions of this Warrant shall be
invalid or unenforceable in any respect, the validity and enforceability of the
remaining terms and provisions of this Warrant shall not in any way be affected
or impaired thereby and the parties will attempt in good faith to agree upon a
valid and enforceable provision which shall be a commercially reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Warrant.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK,
                             SIGNATURE PAGE FOLLOWS]


<PAGE>



                  IN WITNESS WHEREOF, the Company has caused this Warrant to be
duly executed by its authorized officer as of the date first indicated above.


                                       SAFESCIENCE, INC.


                                       By:_____________________________________
                                            Name:
                                            Title:


<PAGE>



                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the foregoing Warrant)

To SafeScience, Inc.

In accordance with the Warrant enclosed with this Form of Election to Purchase,
the undersigned holder hereby exercises the right to purchase _________________
of the shares of Common Stock ("Warrant Shares") of SafeScience, Inc., a Nevada
corporation (the "Company"), evidenced by the attached Warrant (the "Warrant").
Capitalized terms used herein and not otherwise defined shall have the
respective meanings set forth in the Warrant.

         1. Form of Exercise Price. The Holder intends that payment of the
Exercise Price shall be made as:

____________      a "Cash Exercise" with respect to _________________ Warrant
                            Shares; and/or

____________      a "Cashless Exercise" with respect to _______________ Warrant
                           Shares (to the extent permitted by the terms of the
                           Warrant).

         2. Payment of Exercise Price. In the event that the holder has elected
a Cash Exercise with respect to some or all of the Warrant Shares to be issued
pursuant hereto, the holder shall pay the sum of $___________________ to the
Company in accordance with the terms of the Warrant.

         3. Delivery of Warrant Shares. The Company shall deliver to the holder
__________ Warrant Shares in accordance with the terms of the Warrant.

Date: _______________ __, ______



   Name of Registered Holder


By:___________________________
     Name:
     Title:




<PAGE>


                  If the number of shares of Common Stock issuable upon this
exercise shall not be all of the shares of Common Stock which the undersigned is
entitled to purchase in accordance with the enclosed Warrant, the undersigned
requests that a New Warrant (as defined in the Warrant) evidencing the right to
purchase the shares of Common Stock not issuable pursuant to the exercise
evidenced hereby be issued in the name of and delivered to:

                                   (Please print name and address)


Dated: _____________, _____           Name of Holder:


                                      (Print)

                                      (By:)
                                      (Name:)
                                      (Title:)
                                      (Signature must conform in all respects to
                                      name of holder as specified on the face
                                      of the Warrant)


<PAGE>


                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

                  FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto ________________________________ the right represented by the
within Warrant to purchase ____________ shares of Common Stock of SafeScience,
Inc. to which the within Warrant relates and appoints ________________ attorney
to transfer said right on the books of SafeScience, Inc. with full power of
substitution in the premises.

Dated:

---------------, ----


                                     -------------------------------------
                                     (Signature  must  conform in all  respects
                                     to name of holder as
                                     specified on the face of the Warrant)


                                     -------------------------------------
                                     Address of Transferee

                                     -------------------------------------

                                     -------------------------------------



In the presence of:


--------------------------