FacebookMail An astrophysicist and a molecular and cell biology expert discuss what we know, what we don’t, and how we’re trying to find out more about how life arose on Earth and whether it might exist elsewhere. If you like this article, please sign up for Snapshot, Portside's daily summary. Email (One summary e-mail a day, you can change anytime, and Portside is always free.) Leave this field blank Science Evolution biology cosmology
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