The Spewings of Titan (and More from the AGU Meeting)

Science Talk

Scientific American

Science

4.2 • 644 Ratings

🗓️ 16 December 2010

⏱️ 17 minutes

🔗️ Recording | iTunes | RSS

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Summary

Scientific American editor Davide Castelvecchi joins us from San Francisco to talk about some of the highlights of the meeting of the American Geophysical Union, including volcanoes on Titan, x-rays from lightning, the biota of the Sulawesi Sea, and the connection between light pollution and air pollution. Plus, we'll test your knowledge of some recent science in the news Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	This episode is presented by eBay.
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0:44.4	Welcome to Science Talk, the more or less weekly podcast of Scientific American, posted on December 16th, 2010. I'm Steve Murski. We've been gone for a little bit, but we're going to
0:50.2	be spooling out a bunch of shows for you in short order between now and the end of the year.
0:54.8	In this episode, one of our physics and astronomy writers, Davidae Castilecki, reports from the meeting of the American Geophysical Union in San Francisco.
1:03.7	We spoke on Wednesday, December 15th.
1:08.0	Davide, I know you've been to some interesting sessions there.
1:11.2	There's new information about Titan.
1:15.4	What's going on out there for Kurt Vonnegut fans, too?
1:19.7	In fact, the NASA-led Cassini mission keeps finding new amazing features on Saturn and on its satellites.
1:31.5	The most interesting one this time was on the largest of its satellite, which is Titan.
1:38.0	And it was the first positive identification, or at least scientists feel it's the most compelling evidence so
1:45.8	far for cryo volcanoes. That means icy volcanoes in the solar system.
1:52.8	Icey volcano. What are they spewing? They are spewing liquid water out of a world of ice.
2:00.4	So imagine you have an icy surface surface like you have in Antarctica or Greenland, and there's
2:06.3	a volcano that instead of peering lava, fuse liquid water.
2:11.4	What's going on beneath the surface, you know, on the earth, we're used to, there's
2:16.9	geological activity that's bringing
	...

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