In the mid-18th century, scientists realized that some gases in the Earth’s atmosphere, such as carbon dioxide, trap heat and keep the Earth warm.
The Great Ocean Conveyor Belt slowly circulates the world’s water around the globe. Ocean water is always moving because of tides and waves. The ocean conveyor (or thermohaline circulation) is powered by differences in water temperature and...
The Arctic and parts of Antarctica are warming at a much faster rate than the rest of the world. During the 20th century, air temperatures in some parts of the Arctic increased by about 5 C — 10 times faster than the global average.
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