Climate change is normal. In fact, the climate has been in flux for our entire evolutionary history.
We have witnessed two glaciations as a species and have experienced the Eemian Interglacial when conditions were similar to today (probably even warmer).
During the last glacial, about 25 percent of the world’s landmass was covered by ice. Today, only about 11 percent is covered by ice.
Where did all of the water come from to create that ice? From the oceans. During the last glacial, ocean levels stood about 130 meters (more than 426 ft) lower than today.
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