Natural climate warming caused huge ice sheet collapses in Antarctica eight times in the past 20,000 years.
An increase in temperature, extreme weather, loss of ice and rising sea level are just a few of changes we can measure right now. Let's take a look at some of the most concerning trends.
Greenland's two record-shattering surface melts, though more than a century apart, were both triggered by U.S. heat waves.
Antarctica enjoyed California-like temperatures 50 to 40 million years ago. This temperate climate shows us how the greenhouse effect can alter the Earth. Continue reading →
A global ban on the chemicals that caused the Antarctic ozone hole was successful in staving off one in the Arctic.
Rushing rivers are helping melt Arctic sea ice, according to new research by NASA scientists. Continue reading →
Whales are pushing into new territory as the far north warms quicker than the rest of the planet and sea ice retreats. Continue reading →
See the polar vortex in action as it sank the States into a big freeze in January.
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