Sweden says it found the largest deposit in Europe of rare earths — ingredients in a host of technologies from e-vehicles to wind turbines. Mining and processing them is another story.
Geologists rely on tiny crystals of the mineral zircon to understand the timing of key events in Earth's early days, like the rising of continents and the emergence of oceans.
NASA's Apollo missions already sent astronauts to the moon from 1969 to 1972. But scientists say there's still lots of good science to do there. The moon also could be an ideal stepping stone to Mars.
Scientists on five continents are hunting for geological evidence to pinpoint exactly when humans became a major force shaping life on Earth. But settling on the date could unleash a larger debate.
A 4.4-magnitude earthquake hit Tennessee just after 4 a.m. Wednesday. Seismic tremors shook Georgians awake in the early hours and could be felt as far...
