Latest articles by Crystal Gammon
What's Happening Under Gibraltar?
Small subduction zone may be behind Great Lisbon Earthquake.
Air Guns Give Glimpse Inside a Subduction Zone
Seismic waves show what happens when one tectonic plate dives beneath another.
Imported Tortoises Could Replace Madagascar's Extinct Ones
Tortoises from a nearby island are genetically and morphologically similar.
Mexican Monolith Is World's Tallest Freestanding Rock
Peña de Bernal Natural Monument is a UNESCO-recognized site.
Helium Gas Heralded Underwater Volcano Eruption
El Hierro volcano emitted helium with distinct signatures as it rumbled to life.
Earth Is 'Lazy' Along Some Earthquake Faults
Earth's crust takes the path of least resistance when a fault bends.
Appalachians Get a Face-Lift From Earth's Mantle
Southern reaches not as old, worn-down as thought.
Aftershocks May Portend Major Philippine Earthquake
Subduction zone has been eerily quiet.
How Thick Is the Crust Beneath Antarctica?
Seismic data gives new estimates for curst of least-known continent.
3D Imaging Sizes Up Volcanic Island Landslides
Massive volcanic landslides can trigger catastrophic tsunamis.
Expeditions to Earth's Hostile Corners in 2013
Adventurers prepare to hike, sail and ski.
Russian Far East, Once Closed-Off, Poses Seismic Hazard
Earthquake and volcanoes of region once hidden behind the iron curtain.
New 3D Maps Show Walruses' Icy World
Walruses need ice that isn't too big or too small.
Ancient Earthquake Foreshadowed 2011 Japan Disaster
Precedent found for 2011 quake and tsunami.
Microbe Masses Under Seafloor Are Downsized
Number revised downward, but still a swarm of microbes down there.
Some Himalayan Glaciers Doomed to Shrink
Even with steady temperatures, these glaciers will retreat.
Gold Rises With Molten Rock
Accounts for why some spots have higher concentrations of the rare metal.
Satellites Track Post-Sandy Pollutants
Sewage and sediment were washed to sea by Sandy's surge.
Why Hurricane Sandy Hit Staten Island So Hard
Geography dealt a tough hand to the NYC borough.
Will Sandy Change the Climate Change Conversation?
Some see Sandy as an opportunity to act on climate change.
Leaks Found in Earth's Protective Shield
Phenomenon in magnetosphere can act to let solar particles in.
