Meltdown!: Global Warming Puts the World on Thin Ice

Massive ice sheets slide off the coast of Antarctica and tumble into the sea. Scientists predict more dangerous hurricanes and wilder weather. The Arctic is heating up at almost twice the rate of the rest of Earth. What's going on? Global warming is affecting our planet in many ways. Find out how human activities are turning up the heat, and learn what you can do to help stop the meltdown.