Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

These compounds are similar to fatty acids, which on Earth are most often produced by living things. A new study concluded that non-biological processes, like meteorites crashing into Mars, alone ...

NASA's Curiosity rover found organic compounds on Mars that are often produced by living things on Earth. A new study concluded that non-biological processes alone cannot explain the presence of these ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find. Nearly a ...