Figure 1 (IMAGE) Tohoku University Caption Diagram showing the formation of formaldehyde (H2CO) in the warm atmosphere of ancient Mars and its conversion into molecules vital for life in the ocean. Credit Shungo Koyama Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.