News
When Did the Earth's Crust Start to Shift? Scientists Uncover Evidence of Plate Tectonics Happening 3.48 Billion Years Ago
3+ hour, 42+ min ago (411+ words) More from Smithsonian magazine Sara Hashemi - Daily Correspondent The Earth's crust is constantly changing. It's currently made of many'huge rock slabs called tectonic plates'seven major ones along with many more smaller plates'that fit together like puzzle pieces and move around…...
Earth's Core Might Hold Dozens of Oceans Worth of Hydrogen, Hinting at the Origins of the Planet's Vast Water Supply
1+ mon, 2+ week ago (231+ words) More from Smithsonian magazine Mary Randolph - Freelance contributor Ocean water covers roughly 71 percent of Earth's surface and contains about 321 million cubic miles of water. Some 4.6 billion years ago, gas, rocks and dust clumped together to form Earth. In the baby…...