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slash UK slash AI for people. Welcome to Science Talk, the weekly podcast of Scientific American,

posted on December 23, 2009.

I'm Steve Mursky, and it's almost Christmas.

And Karen Hopkins, our Ace Daily podcast reporter,

has been collecting science and medicine reports related to the holidays.

To get a handle on these seasonal science stories,

I called Karen at her home in an undisclosed location, far north of

the Scientific American offices, Somerville, Massachusetts.

So Merry Almost Christmas, Karen.

Thank you, Steve.

Ho-ho.

Upcoming ho.

Thank you very much.

So you've been collecting a few Christmas-related news stories

from the world of science and medicine. Let's talk about a few of those to help prepare our listeners

for the coming holiday and or family onslaught. That sounds good. So one of the stories is, you know, families have traditions, some families, to go out

and get a nice, beautiful, live, you know, tree to put in their home.

...