Earth ScienceScienceDeath Star Off the Hook for Mass ExtinctionsScienceEarth From Space: Greenland Glacier Shrinks OvernightScienceSun's Dust Ring Could Help Find Exo-EarthsScienceAncient Whale + Killer Shark = Hypercarnivorous WhaleScienceTricky Sea Ice Predictions Call for Scientists to Open Their DataScienceNew U.S. Map Could Stop Species From Becoming EndangeredScienceBefore the Mississippi: Ancient Rivers Flowed WestScienceFractal Haze Could Solve Weak-Sun Mystery for Early EarthScienceU.S. Climate Satellite Capabilities in JeopardyScienceFoucault's Pendulum Dented in Museum MishapScienceWeird Clouds Look Even Better From SpaceScienceThe Crystals at the Center of the EarthScienceGravity Lows Mark Burial Sites of Ancient Tectonic PlatesSciencePhoto: Icelandic Volcano Begins Erupting AgainScienceTracked From Space: Gulf Oil Slick Approaches LandScienceEPA Scientist Says East Coast Beaches Threatened by Sea Level, But Nobody's ListeningScienceSea Creatures Travel Far to Colonize After Volcanic EruptionsScienceTreating Climate Change as a Curable DiseaseScienceNorth American Dinosaurs Were One Big Happy FamilyScienceIcelandic Volcano's Ash Plume as Seen From SpaceScienceWhy Volcanic Eruptions Can Spark LightningScienceNew Evidence of Ice Age Comet Found in Ice CoresScienceAs Temperature Rises, Earth Breathes Faster -- and Maybe HarderScienceClimate Hackers Want to Write Their Own RulesMore Stories