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EnvironmentHumans’ stuff vastly outweighs humans
The human-made technosphere weighs 30 trillion tons and surpasses the natural biosphere in mass and diversity, researchers estimate.
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LifeAsteroid barrage, ancient marine life boom not linked
Impacts from asteroid debris probably didn’t trigger the boom in marine animal diversity around 471 million years ago during the Great Ordovician Biodiversification Event.
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PaleontologyBaby dinosaurs took three to six months to hatch
Growth lines on teeth indicate a surprisingly long incubation period.
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PhysicsChemists strike gold, solve mystery about precious metal’s properties
A longstanding puzzle about gold’s properties has been solved with more complex theoretical calculations.
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ArchaeologyReal-life adventure tale details search for legendary city
"The Lost City of the Monkey God" recounts archaeological expedition to uncover truth behind Honduras’ “White City" myth.
By Erin Wayman -
LifeWhat a mosquito’s immune system can tell us about fighting malaria
Immune system messengers carried in microscopic sacs help mosquitoes fend off malaria, new research suggests.
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AnimalsDesert ants look to the sky, rely on memory to navigate backward
Desert ants appear to use a combination of visual memory and celestial cues to make it back to the nest walking butt-first, researchers find.
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ClimateEarth’s last major warm period was as hot as today
Sea surface temperatures today are comparable to those around 125,000 years ago, a time when sea levels were 6 to 9 meters higher, new research suggests.
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EcosystemsIn debate over origin of fairy circles, both sides might be right
Odd bare spots called fairy circles in African grasslands might be caused by both termites and plants.
By Susan Milius -
Science & SocietyCancer studies get mixed grades on redo tests
Replications of cancer studies fail to reproduce some results.
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ClimateMonsoon deluges turned ancient Sahara green
The ancient Sahara Desert sprouted trees and lakes for thousands of years thanks to intense rainfall.
By Bruce Bower -
ClimateFor three years in a row, Earth breaks heat record
Spurred by climate change and heat from a strong El Niño, 2016 was the hottest year on record.