News Planetary Science Martian Methane: Carbon compound hints at life Share this:FacebookTwitterPocketRedditPrintEmail By Ron Cowen April 7, 2004 at 10:53 am This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe