Curiosity rover finds 'tantalizing' signs of ancient Mars life

NASA's Curiosity rover has found some interesting organic compounds that may be signs of ancient Mars life, but much more work is needed to vet that hypothesis.

Curiosity rover finds 'tantalizing' signs of ancient Mars life
NASA's Curiosity rover has found some interesting organic compounds that may be signs of ancient Mars life, but much more work is needed to vet that hypothesis.