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When Did Plate Tectonics Begin?Ancient rocks in Greenland suggest an answer.
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Faults Show Lake Tahoe's Shaky Past — and FutureEarthquake risk in region higher than previously thought.
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Faults Show Lake Tahoe's Shaky Past and FutureEarthquake risk in region higher than previously thought.
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Jellyfish Hunt Hurts Pacific Leatherback TurtlesAtlantic turtles can stop and eat, while Pacific turtles have to eat on the go.
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Where the Ash from Iceland Volcano's Eruption WentDifferent types of volcano particles went different places.
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Underwater Volcano Erupts in PulsesSeamount spewed enough material to fill 3,500 Olympic swimming pools.
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Lucky Strike: Lightning Brings Seismic SurpriseA seismic detection picks up signal from nearby lightning strike.
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Ships Could Provide Better Tsunami WarningsTsunami generated by 2010 Chile earthquake detected by ship's GPS.
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From Ancient Sediment, a Clearer Climate Change PictureStudying sediments from past climate will help with understanding future changes.
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Space Radar Helps Solve Mystery of Sierra Nevada AgeRate of mountain growth suggests they could have popped up in just 3 million years.
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New Faults, and Earthquake Risks, Found in WashingtonFaults found further north of previously known seismically active area.
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New Maps Unlock Seafloor Secrets Off Oregon CoastNew ocean floor maps could improve understanding of tsunami threat.
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Airborne Laser Helps Solve 1800 Earthquake MysteryLiDAR technology detects fault that may have caused historic SoCal quake.
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Swedish Stonehenge? Ancient Stone Structure Spurs DebateThe megalithic stone structure may have been used as an astronomical calendar.
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Volcanoes' Plumbing Holds Clues to EruptionsMagma chambers below volcanoes can swell and cause quakes that can foreshadow an eruption.
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First Humans' African Home Gets New Birth DateParts of the rift, on the spot where humans evolved, is older than thought.
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Earth's First Continents 'Oozed' From Crust
Instead of boiling up from the mantle, they may have formed closer to Earth's surface.
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Ethiopia's Magnetic Stripes Hold Clues to Ocean FormationStripes are hallmarks of seafloor spreading but have now been found outside of the ocean.
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When Will the Next 'Big One' Hit?Earthquake science has advanced, but precise quakes can't be predicted.
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Where Yellowstone's Hot Water Comes FromTwo types of water fuel Yellowstone's geysers, hot springs and other hydrothermal features.
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Clues to Tokyo's Great Quakes UncoveredCould shed light on future quake risk.
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San Andreas Fault May Look Like a Propeller, Scientists FindFault isn't vertical after all.
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Haiti Could Be in New Earthquake Cycle, Scientists SayHistoric records show previous earthquake patterns on Hispaniola.
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GPS Uncovers Possible Southwest Quake RiskRio Grande Rift not dead, actively stretching.
