Big Picture Science – Before the Big Bang: Andrei Linde
by Gary Niederhoff on December 17, 2012
Part 5 of Before the Big Bang, featuring Andrei Linde, physicist at Stanford University speaking about the many theories under investigation that may help explain the origins of our universe (and others).
Could your favorite Earthling also be your favorite Martian?
Allow me to respond: The answer is "yes." It's possible that billions of years ago, tiny bits of biology quit the Red Planet and infected ours. If so, your family tree -- and that of every other terrestrial life form -- has its deepest roots not in the ancient oceans of Earth, but... (read more)