Hexagonal structures in sediments are evidence of repeated wet and dry conditions on the Red Planet.
water
Posted inEditors' Highlights
Fluid Release from Subducted Slabs Without Percolation Flow
A new study demonstrates the absorption mechanism of H2O release out of subducting slabs, making the previous hypothesis of dehydration embrittlement unnecessary.
Posted inNews
Low-Tech, Energy-Free Tool Collects and Cleans Fog Water
A new fog harvester could benefit communities that lack access to clean freshwater.
Posted inFeatures
Cryovolcanism’s Song of Ice and Fire
Ocean moons of the outer solar system hint at ice volcanoes, hydrothermal vents, and the tantalizing chance of habitability.
Posted inAGU News
Oceans of Opportunity
Our solar system’s ocean worlds offer scientists intriguing instances of exotic phenomena and fresh prospects in the elusive search for planetary habitability.
Posted inOpinions
The Supreme Court Is Bypassing Science—We Can’t Ignore It
The court’s exclusion of scientists from the environmental rulemaking process comes full circle as the EPA strips federal protections for wetlands.
Posted inNews
Subsurface Oceans Could Boost Exoplanet Habitability
Researchers have shown that oceans buried below layers of ice are more common than previously thought.
Posted inNews
Molten Meteorites Didn’t Deliver Earth’s Water
A new study has ruled out large, once-molten meteorites called achondrites as sources of Earth’s water.
Posted inNews
Asteroid Impacts Could Have Warmed Ancient Mars
Hydrogen released during large impacts might have boosted Mars’s surface temperature above freezing for thousands or even millions of years, enabling liquid water to flow over the Red Planet.
Posted inNews
Tonga Eruption May Temporarily Push Earth Closer to 1.5°C of Warming
The underwater eruption of Hunga Tonga–Hunga Ha‘apai sent megatons of water vapor into the stratosphere, contributing to an increase in global warming over the next 5 years.