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How does climate change affect humans?

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There are four really important ways that climate change affects humans.

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Number 1: as the planet warms up, we're going to redistribute rainfall,

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which is going to affect our water resources

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and parts of North America May get a lot drier.

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Number 2: as the polar ice melts, sea levels are going to rise and a lot of people

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and a lot of the world's major cities are right on coasts and that's going to impact them.

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Number 3: things like the species distributions,

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where we can grow food, they are going to change as the planet warms up.

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So the range over which you can grow corn and things will change.

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4: the oceans are going to get more acidic

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as more CO2 dissolves in them. There are untold ramifications from that.

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There are the possibilities of radically altering the food web in the ocean,

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which can affect everything from the composition of the atmosphere

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to the ability of the oceans to provide food for us.

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