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LifeAround 13,000 years ago, humans and fire changed LA’s ecosystem forever
Rapid drying combined with human-made fires changed Southern California forever, killing off ancient bison, dire wolves and five other megafauna species there.
By Jake Buehler -
GeneticsA new look at Ötzi the Iceman’s DNA reveals new ancestry and other surprises
Ötzi had genetic variants for male-pattern baldness and dark skin, and he also had an unusual amount of early farmer ancestry, a new DNA analysis finds.
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ChemistryMagnetic ‘rusty’ nanoparticles pull estrogen out of water
Iron oxide particles adorned with “sticky” molecules trap estrogen in water, possibly limiting the hormone’s harmful effects on aquatic life.