7,733 results
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- Earth
Seismology in your backyard (and on your Twitter feed)
With two USGS programs, Twitter, inexpensive seismic equipment transform citizens into scientists.
- Earth
Hydrothermal vent environments not unchanging
Once-rare organisms can become dominant, probably as some environmental conditions change over time.
- Life
Dinosaurs broiled, not grilled
Debris from K-T impact could have been heat source and heat shield.
- Earth
Footprints could push back tetrapod origins
Newly discovered trackways much older than previous evidence for sea-to-land transition.
- Earth
GPS bolsters view that big Cascadia quakes could hit inland
Satellite tracking of plate movements shows that a magnitude-9 tremor in Pacific Northwest could strike close to urban areas.
- Space
Titan may host prebiotic brew
Saturn’s moon Titan may harbor a prebiotic mix of chemicals similar to those present at the dawn of life on Earth.
- Earth
Age of solar system needs a fresh look
Honed measurements show age overshot by amount significant to earliest stage of formation.
- Earth
Small earthquakes may not predict larger ones
Quakes far from tectonic plate boundaries may simply be aftershocks of ancient temblors.
- Anthropology
Ancient Maya king shows his foreign roots
Copán’s first king may have been part of a colonial expansion by another, distant Maya kingdom.
- Earth
Johnstown Flood matched volume of Mississippi River
A modern survey of terrain determines flow rate of the 1889 flood that was one of America's deadliest disasters.
- Space
Volcanic and ferric surprises on Mercury
Volcanic activity is more recent than expected, MESSENGER shows on its third flyby of the planet. Also, surface iron occurs as oxides.
