Hi, Burl, Virginia.

Southwest Research Institute in Boulder, on Walnut Street.

It's surprising how closely a walnut... resembles the human brain.

I'll put my hands so... one on each side of your head... and I'll smash your skull between them like a walnut.

In a game like yours, you got to work quick and get out before they find the pea under the walnut shell.

Agriculture there has been damaged by the cutting of walnut, apricot, and mulberry trees for winter fuel, and by a failure to replant poplar, willow, and tamarisk the trees that hold fragile meadows in place. These sorts of trees can be restored, given a concerted campaign and investment in nurseries to produce local varieties.

Rusty Schweickart, who was an Apollo 9 astronaut, is on this. Dan Durda, my friend who made this image, works here at Southwest Research Institute in Boulder, on Walnut Street. He created this image for this, and he's actually one of the astronomers who works for them. If we see an asteroid that's going to hit the Earth and we have enough time, we can hit it to move it into a better orbit. But then what we do is we launch a probe that has to weigh a ton or two.