James Balog: Time-lapse proof of extreme ice loss

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.

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Cazaderos-Progreso Forest Campaign

The Cazaderos-Progreso area in southwestern Ecuador is a region of tropical deciduous forest that is 10,000 hectares. This is equal to about 136,000 football fields! Even though this area seems HUGE, it is a small fraction of what once was there. The entire tropical deciduous forest still standing in Ecuador is only about 1% of how big it used to be and this area is just one section

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William Kamkwamba – The boy that harvested the wind

At age 14, in poverty and famine, a Malawian boy built a windmill to power his family's home. Now at 22, William Kamkwamba, who speaks at TED, here, for the second time, shares in his own words the moving tale of invention that changed his life.

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TED – Inspiration to make a difference

Lewis Gordon Pugh loves to pioneer new swimming routes around or between landmarks once thought unswimmable. In 2006, he swam the drought-stricken Thames; also that year he became the first swimmer to do a long-distance swim in all five oceans of the world. The following year, he made the first long-distance swim across the North Pole -- where climate change made the ice temporarily disappear.

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