Building a Case for Life on Mars Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email New evidence shows that early in the history of the planet, Mars likely had rivers, lakes, and oceans of water for tens of millions of years—potentially long enough for life to form. ( Lukiyanova Natalia / Shutterstock ) Produced by Angus Chen Produced by PRI and WNYC