12 things to know about climate change

The Earth Is Warming Up

Some Scientists Question Climate Change

Greenhouse Gases Trap Heat

Burning Fossil Fuels Contributes to Climate Change

Farming Contributes to Climate Change

Deforestation Changes Climate

The World's Sea Levels Are Rising

Countries Are Adapting to Climate Change

The Arctic Is Warming Faster than Other Regions

Climate Change Could Cause Extreme Weather

Climate Change Alters Ecosystems

Humans Can Make a Difference

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