# Penelope Boston says there might be life on Mars

So the Mars Rovers didn't scoop up any alien lifeforms. Scientist Penelope Boston thinks there's a good chance -- a 25 to 50 percent chance, in fact -- that life might exist on Mars, deep inside the planet's caves. She details how we should look and why.

- Kind: Talk
- Year: 2008
- Runtime: 18 min
- By: TED.com
- Genres: Education, Science
- Archive: [Internet Archive](https://archive.org/details/PenelopeBoston_2006)
- Licence or status: [CC BY-NC-ND 3.0](http://creativecommons.org/licenses/by-nc-nd/3.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/PenelopeBoston_2006?play=1)