Life
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We summarize the week's scientific breakthroughs every Thursday.
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GeneticsTweaking one gene with CRISPR switched the way a snail shell spirals
The first gene-edited snails confirm which gene is responsible for the direction of the shell’s spiral.
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Artificial IntelligenceA new AI acquired humanlike ‘number sense’ on its own
A new artificial intelligence seems to share our intuitive ability to estimate numbers at a glance.
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EcosystemsReaders were curious about green icebergs, aliens and more
Readers had questions and comments about icebergs and climate change, CBD and NASA’s search for E.T.
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AnimalsDeep-sea fishes’ eye chemistry might let them see colors in near darkness
An unexpected abundance of proteins for catching dim light evolved independently in three groups of weird deep-sea fishes.
By Susan Milius -
LifeA gut bacteria transplant may not help you lose weight
A small study finds that transplanting gut microbes from a lean person into obese people didn’t lead to weight loss, as hoped.
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Life1 million species are under threat. Here are 5 ways we speed up extinctions
One million of the world’s plant and animal species are now under threat of extinction, a new report finds.
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PaleontologyA tiny mystery dinosaur from New Mexico is officially T. rex’s cousin
A newly identified dinosaur species called Suskityrannus hazelae fills a gap in tyrannosaur lineage.
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EarthA belly full of wriggling worms makes wood beetles better recyclers
Common beetles that eat rotten logs chew up more wood when filled with a roundworm larvae, releasing nutrients more quickly back to the forest floor.
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ArchaeologyAn ancient pouch reveals the hallucinogen stash of an Andes shaman
South American shamans in the Andes Mountains carried mind-altering ingredients 1,000 years ago, a study finds.
By Bruce Bower -
EcosystemsWar wrecked an African ecosystem. Ecologists are trying to restore it
Bringing back big predators to Gorongosa, once a wildlife paradise in Mozambique, is just one piece of the puzzle in undoing the damage there.
By Jeremy Rehm -
AnimalsThese award-winning photographs capture rarely seen wildlife and landscapes
Winners of the California Academy of Sciences’ annual photo contest dove deep underwater and hiked to great heights to create these striking images.
By Maanvi Singh -
AnimalsPandas’ share of protein calories from bamboo rivals wolves’ from meat
The panda gut digests protein in bamboo so well that the animal’s nutritional profile for calories resembles a wolf’s.
By Susan Milius