Scientists and policymakers are now faced with a difficult question: should the pursuit of greener energy come at the cost of ...

Curiosity found large organic molecules in a 2013 Mars rock sample. These fragments suggest Mars had the right chemistry for ...

Mysterious tunnels in desert rocks may be the work of unknown microbes, hinting at a hidden world inside marble and limestone ...

NASA's Curiosity Mars rover has detected the largest organic (carbon-containing) molecules ever found on the red planet. The ...