Climate change: Oh, it's real. (8 talks)

In this brand-new slideshow (premiering on TED.com), Al Gore presents evidence that the pace of climate change may be even worse than scientists recently predicted. He challenges us to act.

TED2008, Filmed Mar 2008, Posted Apr 2008

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Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.

TED2012, Filmed Feb 2012, Posted Mar 2012

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In 4 minutes, atmospheric chemist Rachel Pike provides a glimpse of the massive scientific effort behind the bold headlines on climate change, with her team -- one of thousands who contributed -- taking a risky flight over the rainforest in pursuit of data on a key molecule.

TEDGlobal 2009, Filmed Jul 2009, Posted Nov 2009

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Photographer James Balog shares new image sequences from the Extreme Ice Survey, a network of time-lapse cameras recording glaciers receding at an alarming rate, some of the most vivid evidence yet of climate change.

TEDGlobal 2009, Filmed Jul 2009, Posted Sep 2009

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Environmental scientist David Keith proposes a cheap, effective, shocking means to address climate change: What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?

TEDSalon 2007 Hot Science, Filmed Sep 2007, Posted Nov 2007

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A happy song about global warming, from Jill Sobule.

TED2006, Filmed Feb 2006, Posted Apr 2007

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"I don't think we're going to make it," John Doerr says in an emotional talk about climate change and investment. To create a world fit for his daughter to live in, he says, we need to invest now in clean, green energy.

TED2007, Filmed Mar 2007, Posted May 2007

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As Vicki Arroyo says, it's time to prepare our homes and cities for our changing climate, with its increased risk of flooding, drought and uncertainty. She illustrates this inspiring talk with bold projects from cities all over the world -- local examples of thinking ahead. Read our Q&A with Vicki Arroyo.

TEDGlobal 2012, Filmed Jun 2012, Posted Sep 2012

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