This episode is presented by eBay.

Rob, everyone loves a deal and a bargain from time to time, don't they? Absolutely, mate. And you know where you can grab a great deal? Talk to me. Where? The eBay app. Yes, you are correct. You didn't need to talk to me. I already knew it. I love eBay. When you're buying, you can discover loads of hidden gems. there's so many items where you think I would have never found that anywhere else.

Then when you're buying, you can discover loads of hidden gems. There's so many items where you think I would have never found that anywhere else. Then when you're selling, it's so simple and most

importantly, free. It's free, Rob. When it's this easy to sell for free and there's great deals

on things you love. You can't help but say when it's eBay. It excludes vehicles and business

sellers.

Jason, this is Houston. Are you ready for the event?

Hello, I'm Mariette de Christina, editor-in-chief of Scientific American.

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Welcome to the Scientific American podcast Science Talk posted on December 8th, 2011.

I'm Steve Murski.

One of the most worrisome consequences of global warming is that sea levels could rise substantially this century and beyond.

Scientists look back into the geological record to see how carbon dioxide levels in the atmosphere correlated to sea level and track a few basic measurements of the atmosphere in current times to predict how much sea

level might rise in the future. Ilko Rowling, an ocean and climate scientist at the University of

Southampton in England, has studied the paleo climate record going back 50 million years. On December 6th,

that the annual meeting of the American Geophysical Union in San Francisco,

Rowling presented calculations indicating that sea level worldwide could rise far more than scientists had previously thought.

He also sat down with Scientific American Senior Editor Mark Fischetti to explain how the basic measurements of carbon dioxide in parts per million in the air and the

added heat in the atmosphere that the carbon dioxide creates, called forcing, leads to water,

water everywhere.

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