Was Earth already heating up, or did global warming reverse a long-term cooling trend?

Over the past century, the Earth's average temperature has swiftly increased by about 1 degree Celsius (1.8 degrees Fahrenheit). The evidence is hard to dispute. It comes from thermometers and other sensors around the world.

from Phys.org - latest science and technology news stories https://ift.tt/d7e9KPn

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