As spring kicks in, our planet pics take a decidedly green hue, from the northern lights, to a verdant Alaskan park and a river that turns color in a flash.
The Lunar Reconnaissance Orbiter provides a view of Earth from the dark side of the moon and a South American country names half of its area a conservation corridor. Plus: Two hikers brave frozen Lake Erie.
After carefully measuring the masses of small, rocky exoplanets, astronomers have come to the conclusion that our solar system may not be unique.
Earthquakes rattle Florence, raising concerns over the safety of Michelangelo's David. Continue reading →
Colorful hot springs in Yellowstone National Park get their hues from good-luck coins tossed into their waters and trash discarded by tourists. Continue reading →
Dust gets everywhere, particularly around young stars. But when it comes to the presence of dust in their interplanetary environments, many mature sun-like stars are very house-proud. Continue reading →
Dozens of eyewitnesses offered evidence about the death of Michael Brown, and much of it was confusing and contradictory. Here's why.
Acid rain and deforestation runoff are causing a drop in the calcium content of some lakes in North America and western Europe, with ominous potential effects.
+ Load More