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Welcome to Science Talk, the weekly podcast of Scientific American posted on August 20th, 2010. I'm Steve Mursky. This week on the podcast,

I call this chapter Houston. We have a fungus. That's renowned writer Mary Roach, author of the new book,

Packing for Mars, the curious science of life in the void. Her book tour recently brought her to New York

City, where she gave a talk at the Barnes

and Noble on the Upper West Side.

In part one of the podcast, coming right up, we'll hear that talk.

Then in part two, Mary and I discuss further the general unpleasantness of being in space.

So without any further ado, here's Mary Roach.

Thank you.

I'm sorry I don't have any beverages.

I did give thought to serving Tang today.

But you have to carry.

It comes to these large containers, you know, pack it in their bag, and then you don't have the carry-on thing.

But anyway, a Tang, you should be interested to know, is not invented by NASA.

It's a commercial off-the-shelf product that they brought on board.

NASA actually takes a bunch of commercial products straight off the supermarket shelf into space.

One of them I found out the diapers that the astronauts wear under their spacewalking

...