Short Stuff: The Mars Rock with Signs of Life?

<p>In 1996, real-deal NASA scientists announced they had discovered signs of ancient microbial life in a rock that had broken off Mars and landed on Antarctica. The news set off a controversy still going today. Do we already have proof of alien life?</p><p>See <a href="https://omnystudio.com/listener">omnystudio.com/listener</a> for privacy information.</p>