Geology

Researchers model eruption on Jupiter’s moon Europa

A new model shows how brine on Jupiter’s moon Europa can migrate within the icy shell to form pockets of salty water that erupt to the surface when freezing. The findings, which are important for the upcoming Europa Clipper mission, may explain cryovolcanic eruptions across icy bodies in the solar system.

U.S. corn crop increasingly sensitive to drought

New management approaches and technology have allowed the U.S. Corn Belt to increase yields despite some changes in climate. However, soil sensitivity to drought has increased significantly, according to a new study that could help identify ways to reverse the trend.

AI detects hidden earthquakes

Tiny movements in Earth’s outermost layer may provide a Rosetta Stone for deciphering the physics and warning signs of big quakes. New algorithms that work a little like human vision are now detecting these long-hidden microquakes in the growing mountain of seismic data.

How earthquake swarms arise

A new fault simulator maps out how interactions between pressure, friction and fluids rising through a fault zone can lead to slow-motion quakes and seismic swarms.

Steve Graham looks back on the first Earth Day

Stanford Earth Dean Steve Graham joined one of the thousands of rallies held in celebration of the first Earth Day. Now he discusses the event and his own expanding thinking about the planet and its history.