All Stories
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		HumansA 90,000-year-old bone knife hints special tools appeared early in Africa
The discovery of a bone knife in a Moroccan cave points to the ancient emergence of specialized toolmaking in the region.
By Bruce Bower - 			
			
		AstronomyHubble may have spotted the first known exomoon
A single sighting with the Hubble Space Telescope seems to confirm that there’s a Neptune-sized moon orbiting exoplanet Kepler 1625b.
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		ChemistrySpeeding up the evolution of proteins wins the chemistry Nobel
Work on evolving new proteins from old ones takes the Nobel Prize in chemistry.
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		AnimalsGiraffes inherit their spots from their mothers
Africa’s tallest creatures get their characteristic patterns of spots from their moms, a new study finds.
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		PhysicsDazzling laser feats earn these physicists a Nobel
The 2018 Nobel Prize in physics went to scientists — including the third-ever female winner — who made optical tweezers and boosted the strength of laser pulses.
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		ClimateTracking how rainfall morphs Earth’s surface could help forecast flooding
After Hurricane Harvey, scientists used GPS networks to track how Earth’s surface morphed under the weight of floodwaters.
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		PhysicsGroundbreaking ways of manipulating light win trio the 2018 physics Nobel
Three scientists, including the third woman to win a physics Nobel, are honored for their laser inventions.
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		Health & MedicineDiscovery of how to prod a patient’s immune system to fight cancer wins a Nobel
Two scientists share the 2018 medicine Nobel for identifying proteins that act as brakes on tumor-fighting T cells.
By Tina Hesman Saey and Aimee Cunningham - 			
			
		PlantsGene editing can speed up plant domestication
CRISPR/Cas9 replays domestication to make better ground cherries and tomatoes.
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		GeneticsSmuggling a CRISPR gene editor into staph bacteria can kill the pathogen
A new way fight antibiotic-resistant bacteria co-opts toxin-producing genes.
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		LifeCancer immunotherapy wins the 2018 medicine Nobel Prize
Therapies that unleash immune system brakes against cancer have earned the 2018 Nobel Prize in physiology or medicine.
By Tina Hesman Saey and Aimee Cunningham - 			
			
		AstronomyWe may not have found aliens yet because we’ve barely begun looking
A new calculation says SETI searches have combed the equivalent of a hot tub out of Earth’s oceans looking for extraterrestrial intelligence in space.