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Welcome. and quote, Science Podcast to receive special offers. Welcome to the Science Podcast for February 20th, 2015.

I'm Suzanne Bard, filling in for Sarah Crespi.

In this week's show, we have David Grimm up first with some online news stories,

and then we hear from Renee

Duckworth about the influence of maternal effects on ecological communities.

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 a daily news site.

He's just back from the annual meeting of the AAAS in San Jose, California, and he'll tell us

about some of the intriguing

ideas scientists were tackling there. I'm Suzanne Bard. Hurricane Sandy, the 2010

earthquake in Haiti, and the 2013 floods in Colorado were all devastating natural disasters,

but they share something else in common that earlier catastrophes don't. That's the ability of people in the middle of the crisis to post about it in real time on social media.

University of Colorado researchers have combed through patterns of social media responses to disasters

...