For decades, the United States has depended almost entirely on foreign sources for its supply of rare earth ...
Coal ash in the U.S. holds substantial rare earth elements, potentially reducing dependence on imports, with ongoing research ...
About 252 million years ago, 80 to 90 percent of life on Earth was wiped out. In the Turpan-Hami Basin, life persisted and ...
Scientists have found a rare life "oasis" where plants and animals thrived during Earth's deadliest mass extinction 252 ...
Between 15,000 and 8,000 years ago, the Earth experienced significant climatic changes, including the rapid retreat of ice ...