Guest Writer
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Magazine
In the April 13 SN: The browning of the Arctic, RNAs steal the spotlight, sensing Earth's magnetic field, a spider speed record, Bennu spits dust, a ketamine drug for depression and more.
Beth Geiger's Articles
- Say What?
You’re living in a new geologic age. It’s called the Meghalayan
The newly defined Meghalayan Age began at the same time as a global, climate-driven event that led to human upheavals. - Science Stats
Earth’s dry zones support a surprising number of trees
A Google Earth-based estimate of dryland forests adds serious leafage to Earth’s total tree count. - Science Visualized
Stunning images reveal glacial landscapes under the oceans
The most detailed atlas of the seafloor ever compiled offers colorful imagery and ghostly glimpses of Earth’s glacial past. - How Bizarre
Mount St. Helens is a cold-hearted volcano
Geophysics reveals that deep beneath Mount St. Helens, there’s no source of hot magma, just a wedge of cold serpentinite rock. Where is the missing heat? - News
Remnants from Earth’s birth linger 4.5 billion years later
Shaken, not stirred: Tungsten isotopes reveal that mantle convection has left some remnants of ancient Earth untouched for 4.5 billion years. - News
New tyrannosaur bridges gap from medium to monstrous
Horse-sized Timurlengia euotica had a brain and ears like its bigger relative Tyrannosaurus rex, which lived millions of years later. - News
3.5 billion years ago, oceans were cool, not hot
Extensive new evidence from South Africa suggests that 3.5 billion years ago, Earth was locked in a cold spell, with isolated blasts of hydrothermal heat that may have helped incubate life.