Life
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LifeKoalas aren’t primates, but they move like monkeys in trees
With double thumbs and a monkey-sized body, an iconic marsupial climbs like a primate.
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ArchaeologyDNA from 5,700-year-old ‘gum’ shows what one ancient woman may have looked like
From chewed birch pitch, scientists recovered DNA from an ancient woman and her mouth microbes and hazelnut and duck DNA from a meal she’d consumed.
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NeuroscienceMice watching film noir show the surprising complexity of vision cells
Only about 10 percent of mice’s vision cells behaved as researchers expected they would, a study finds.
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AnimalsA year of big numbers startled the world into talking about nature
One million species are at risk. Three billion birds have been lost. Plus surges in Amazon burning.
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GeneticsThe first U.S. trials in people put CRISPR to the test in 2019
Trials of the gene editor in people began in the United States this year, a first step toward fulfilling the technology’s medical promise.
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Health & MedicineSurplus chromosomes may fuel tumor growth in some cancers
Extra copies of some genes on excess chromosomes may keep cancer cells growing. Without those extras, cancer cells form fewer tumors in mice.
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AnimalsTexas has its own rodeo ant queens
New species of rodeo ants, riding on the backs of bigger ants, turned up in Austin, Texas.
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AnimalsA biochemist’s extraction of data from honey honors her beekeeper father
Tests of proteins in honey could one day be used to figure out what bees are pollinating and which pathogens they carry.
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AnimalsWhy some whales are giants and others are just big
Being big helps whales access more food. But how big a whale can get is influenced by whether it hunts for individual prey or filter-feeds.
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LifePrions clog cell traffic in brains with neurodegenerative diseases
Prions may derail cargo moving inside brain cells, perhaps contributing to cell death in prion diseases.
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ClimateHow the Arctic’s poor health affects everyday life
A new NOAA report features testimony from indigenous communities in Alaska who are weathering the impacts of Arctic warming.
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PaleontologyLicelike insects munched on dinosaur feathers around 100 million years ago
Fossils in amber push the origin of feather-feeding insects back over 50 million years, a study finds.