snowball earth
Scientists Are Studying Areas of Earth Where Time Is Mysteriously Missing
In mysterious rock formations known as "unconformities," millions of years of Earth's history are missing. Now, scientists have the best idea yet as to why.
Researchers Discover Oldest-Ever Evidence of Animals on Earth
Demosponges, the first multicellular animals on earth, emerged 635 to 660 million years ago after a “Snowball Earth” period when the earth was almost completely frozen.
Climate Change Might Be Messing Up Volcanoes’ Planet-Cooling Powers
Volcanoes spew ash into the stratosphere that reflects back some sunlight.
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