EXHIBIT 31.1
            CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Peter Katevatis, Chief Executive Officer, certify that:

      (1)   I have reviewed this quarterly  report on Form 10-QSB of Mediscience
            Technology Corp.;

      (2)   Based on my  knowledge,  this  report  does not  contain  any untrue
            statement  of a  material  fact  or omit to  state a  material  fact
            necessary to make the statements made, in light of the circumstances
            under which such  statements  were made, not misleading with respect
            to the period covered by this report;

      (3)   Based on my knowledge, the financial statements, and other financial
            information included in this report,  fairly present in all material
            respects,  the financial  condition,  results of operations and cash
            flows of the  registrant  as of, and for,  the periods  presented in
            this report;

      (4)   The registrant's other certifying officers and I are responsible for
            establishing and maintaining  disclosure controls and procedures (as
            defined in  Exchange  Act Rules  13a-15(e)  and  15d-15(e))  for the
            registrant and have:

            a)    designed such disclosure  controls and  procedures,  or caused
                  such  disclosure  controls and procedures to be designed under
                  our supervision,  to ensure that material information relating
                  to the registrant, including its consolidated subsidiaries, is
                  made known to us by others within those entities, particularly
                  during the period in which this report is being prepared;

            b)    evaluated the  effectiveness  of the  registrant's  disclosure
                  controls and procedures and presented in this quarterly report
                  our  conclusions  about the  effectiveness  of the  disclosure
                  controls and  procedures,  as of the end of the period covered
                  by this report based on such evaluation; and

            c)    disclosed  in  the  report  any  change  in  the  registrant's
                  internal  control over  financial  reporting that has occurred
                  during  the  registrant's  most  recent  fiscal  quarter  (the
                  registrant's  fourth fiscal  quarter in the case of the annual
                  report) that has materially affected,  or is reasonably likely
                  to materially affect,  the registrant's  internal control over
                  financial reporting; and

      (5)   The  registrant's  other  certifying  officers and I have disclosed,
            based  on our  most  recent  evaluation  of  internal  control  over
            financial  reporting,  to the  registrant's  auditors  and the audit
            committee  of  the  registrant's  board  of  directors  (or  persons
            performing the equivalent functions):

            a)    all  significant  deficiencies  in the design or  operation of
                  internal control over financial reporting which are reasonably
                  likely to adversely affect the registrant's ability to record,
                  process, summarize and report financial information; and

            b)    any fraud,  whether or not material,  that involves management
                  or  other  employees  who  have  a  significant  role  in  the
                  registrant's internal control over financial reporting.

Date:   July 19, 2007

/s/ Peter Katevatis
-----------------------------
Peter Katevatis
Chief Executive Officer


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