Episodes

Sep 05, 2006
Death by asteroid?

How safe is our future?  With millions of rocks careening around the solar system, what are the chances of a major impact wiping out a city, a country, or all life on Earth?

We’ll talk to NASA scientists about how they’re hunting for asteroids that might slam into our world, and what they’ve found so far.  Are there any signs of immediate danger?  Apollo 9 astronaut Rusty Schweickart tells us what sort of defense might deflect a rock that’s “incoming.”  Finally, journalist William Burrows describes why he thinks NASA could be doing a lot more to safeguard Earth.


Aug 22, 2006
Missing moon moments.

Poor Pluto – talk about losing your identity.  This punk world was hailed in 1930 as the first planet found in the 20th century, only to be dismissed as a hunk of icy rock by the start of the 21st.  Now, astronomers have changed their minds: Pluto and three other solar system bodies are official members of the planetary pantheon.  But, for how long?  We’ll hear the new definition of a planet as proposed at the International Astronomical Union meeting in Prague.


Aug 08, 2006
Is it worth the effort, evolution-wise?
Jul 18, 2006
Earth's early days.
Jul 11, 2006
Is there meaning to the universe?
Jun 06, 2006
Computational physics.
May 30, 2006
Science education is failing.
May 23, 2006
Is the sky falling?
May 02, 2006
When they come alive.
Apr 25, 2006
Eyes on ice.
Apr 11, 2006
Visit the Science Fiction Museum.
Apr 04, 2006
Why we don't see the obvious.
Mar 28, 2006
Cassini visits the giants.
Mar 21, 2006
Evolutionary tales.