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Thank you. and quote science podcast to receive special offers. Welcome to the science podcast for February 2, 2017. I'm Alexa Billo. In this week's show,

I talk with Philip Tetlock about how head-to-head tournaments can improve our ability to predict events.

And David Grimm is here with Sarah Crespi, with a roundup of stories from the daily news site.

Now we have David Grimm, editor for our daily news site.

He's here to talk about some recent online stories.

I'm Sarah Cresby.

First up, we have a story on sending oxygen from Earth to the

moon. It turns out the Earth has been feeding oxygen to the moon for a long time, billions of years.

Even though that means we're losing a little bit of atmosphere every day, it doesn't mean that the

moon is gaining one, right, Dave?

No. We are sending four, or we have sent, four trillion, trillion, trillions of oxygen

to the lunar surface in the last 2.4 billion years, not enough to create an atmosphere on the

moon, not even enough to really create a substantial amount of oxygen on the moon, but enough

to be detected by lunar probes. How are the atoms getting from our planet to the moon?

Turns out that a small part of our air leaks into space every

day. It's not really enough for us or our planet to notice. But some of the atoms and the molecules

...