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Welcome to the science podcast for June 5, 2015.

I'm Suzanne Bard.

In this week's show, David Grimm talks to Sarah Crespi about the week's most interesting online news stories.

Alexei Balinski will discuss friction at the atomic level.

And finally, we'll hear from Braxton-Boren about the acoustics of historical speeches.

Support for the science podcast is provided by AAAAS, the American Association for the Advancement of Science, advancing science, engineering, and innovation throughout the world for the benefit of all people.

AAAS, the Science Society.

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

He's here to talk about some recent stories.

I'm Sarah Crespi.

First up, we have a story on the vital role the game

Rock Paper Scissors plays in biology. What's your favorite version of Rock Paper Scissors?

Mine, if you've heard of it, is Hunter Bear Ninja, where Hunter shoots Bear, Bear eats

bear, bear, eats ninja, and ninja kills the hunter.

Or how about the lizard version, Dave?

...