New research suggests that release of methane from seafloor hydrates was much slower than hypothesized during a period of rapid global warming about 56 million years ago.
New orbiter data support an important role for seasonal frost—not liquid water—in the formation of Martian gullies.
A new study suggests that magnetic reconnection may fuel slow solar winds, which top out at speeds below 500 kilometers per second.
By studying past volcanic eruptions, scientists find that the amount of water vapor reaching the stratosphere during moderately explosive eruptions may not be contributing to the greenhouse effect.
Falling ground temperatures in the cold season are found to trigger shallow, slow-moving landslides on slopes with clayey soil.
Manganese deposits in Gale Crater fractures are similar to Earth features that usually require flowing water and highly oxidizing conditions.
Scientists discover the source of a coastal Korean current that reverses its flow in the summer.
The global temperature targets established in Paris in 2015 are ambitious; new research examines what it would take to achieve those targets.
Up to 40% of the total rainfall in arid parts of East Africa may be caused by water vapor from farming practices in South Asia.
Underwater gliders and ocean modeling reveal unexpectedly weak El Niño effects on a major West Coast current.