Astrobio.net

The day the algae died

The P-T mass extinction may have been instigated by populations of algae dying. According to one group of scientists, this die-off of large numbers of relatively simple life forms caused a crash in the ocean's ...

Dec 14, 2010 4.1 / 5 (13) 8 | with audio podcast

The three ages of Mars

There is no place on Earth that is a perfect copycat of Mars as it is now, or as it was at any specific point in the past. But scientists suggest Earth has little versions of Mars as it might have been over ...

Dec 10, 2010 4.6 / 5 (7) 1 | with audio podcast

Breaking Antarctica's ice

Over the course of the past decade, NASA spacecraft have identified several sites on Mars where conditions capable of supporting life existed in the past. One of the most promising of these sites, and a good ...

Nov 16, 2010 4.7 / 5 (9) 1 | with audio podcast

Searching for life on Mars

The first and only attempts to search for life on Mars were the Viking missions launched in 1975. Now scientists are suggesting the next decade of robotic probes sent to the red planet should make the search ...

Nov 11, 2010 4.9 / 5 (12) 11 | with audio podcast