Introducing Peak Scientific. With over 25 years of expertise, Peak leads the industry in providing

reliable, high purity gas generators for LCMS and GCMS. Whether you're in the lab conducting

groundbreaking research or pushing the boundaries of science, trust Peak Scientific to supply

gas for undisrupted workflows.

When it comes to your LC or G.C, don't settle for less.

Choose the solution that is tested, validated, and approved by leading instrument manufacturers globally. Visit PeekScientific.com and quote Science Podcast to receive special offers.

Welcome to the science podcast for November 7, 2014.

I'm Sarah Crespi.

In this week's show, we have David Grimm up first with some online news stories, and then we hear from Stephanie Kirst about growing

norovirus in the lab.

Support for the science podcast is provided by AAAS, 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, at www.aAAS.org.

Now we have David Grimm.

He's the editor for our online daily news site here to talk about some recent online stories.

I'm Sarah Crespi.

First up, we have a story on managing

our social lives on and offline. To some, it may seem like we have a lot more friends

now in the virtual world than we ever did in the physical world. I, for example, have 148

Facebook friends. I just checked today. But that might not be the case. Both settings

might push up against the same limit known as Dunbar's number. So, Dave, how many friends can we

...