| 1.   | I      have reviewed this quarterly report on Form 10-Q of Carbon Sciences, Inc.      for the quarter ended September 30,2008; |
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| 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; |
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| 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; |
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| 4.   | The registrant's other certifying officer(s) 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)) and      internal control over financial reporting (as defined in Exchange Act      Rules 13a-15(f) and 15d-15(f)) for the registrant and      have: |
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| 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; |
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| b.   | Designed such internal control over financial reporting, or      caused such internal control over financial reporting to be designed under      our supervision, to provide reasonable assurance regarding the reliability      of financial reporting and the preparation of financial statements for      external purposes in accordance with generally accepted accounting      principles; |
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| c.   | Evaluated the effectiveness of the registrant's disclosure      controls and procedures and presented in this 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 |
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| d.   | Disclosed in this report any change in the registrant's      internal control over financial reporting that occurred during the      registrant's most recent fiscal quarter (the registrant's fourth fiscal      quarter in the case of an annual report) that has materially affected, or      is reasonably likely to materially affect, the registrant's internal      control over financial reporting;and |
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| 5.   | The registrant's other certifying officer(s) 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): |
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| a.   | All significant deficiencies and material weaknesses 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 |
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| 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 financialreporting. |
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| /s/      Derek W. McLeish          |
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| Derek      W. McLeish              |
| Chief      Executive Officer and   |
| Acting      Chief FinancialOfficer |