After four decades of fly-by probes, orbiters, landers, and rovers, the quest for life on Mars is as tantalizing as ever. NOVA goes behind the scenes of the latest NASA missions to the Red Planet to reveal new clues and challenges on the road to answering this ultimate question. Is There Life on Mars? airs on NOVA Wednesday, August 10 at 9pm ET on PBS (check local listings).

To find out more about Mars please check out our companion website http://www.pbs.org/wgbh/nova/mars/

Become a fan of NOVA by joining our Facebook page ttp://www.facebook.com/home.php?#/pages/NOVA/29589997195