Did Comets Kick-Start Life on Earth? (IMAGE) American Chemical Society Caption The origins of life on Earth are still shrouded in mystery. One compelling possibility is that comets delivered the building blocks for life eons ago. This week, Speaking of Chemistry explains the chemistry behind how these icy, lumpy space rocks might have seeded life on Earth. Check out the video here: https://youtu.be/FnuldVd99x8. Credit The American Chemical Society Usage Restrictions None License Licensed 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.