If you had $1 billion to spend on just one project, what would it be? Here's how an astrobiologist, a broadcaster, a skeptic and a Nobel laureate, amongst others, would spend the money.
Filmed at the 2010 Science Foo Camp in California, this is the last of four videos in this series.
Tiger sharks can relocate familiar hunting spots from several kilometers away
- By Katherine Harmon on March 1, 2011
Sophisticated stone tools and piles of bones identify early bird hunters in coastal California
- By Katherine Harmon on March 3, 2011