News
- Health & Medicine
3-D mammograms are popular, but are they better than 2-D?
The use of digital breast tomosynthesis, a newer breast cancer screening technology with limited evidence, has risen in recent years.
- Microbes
Gut microbes might help elite athletes boost their physical performance
Veillonella bacteria increased in some runners’ guts after a marathon, and may make a compound that might boost endurance, a mouse study suggests.
- Archaeology
Capuchin monkeys’ stone-tool use has evolved over 3,000 years
A Brazilian archaeological site reveals capuchins’ long history of practical alterations to pounding implements, researchers say.
- Astronomy
The highest-energy photons ever seen hail from the Crab Nebula
An experiment in Tibet spotted photons with over 100 trillion electron volts of energy.
- Animals
Parasites ruin some finches’ songs by chewing through the birds’ beaks
Parasitic fly larvae damage the beaks of Galápagos finches, changing their mating songs and possibly causing females to pick males of a different species.
- Astronomy
The cosmic ‘Cow’ may be a strange supernova
New observations suggest the strange bright burst called the ‘Cow’ was a supernova, rather than a shredded star.
- Tech
How NASA’s portable atomic clock could revolutionize space travel
An atomic clock designed to enable self-driving spaceships and GPS-like navigation on other planets is about to take a yearlong test flight.
- Science & Society
Lost wallets are more likely to be returned if they hold cash
Worldwide, return rates of lost wallets goes up as the money inside increases, contradicting the idea that people act in their own self-interest.
- Oceans
The world’s fisheries are incredibly intertwined, thanks to baby fish
A computer simulation reveals how one nation's management of its fish spawning grounds could significantly help or hurt another country's catch.
- Genetics
DNA confirms a weird Greenland whale was a narwhal-beluga hybrid
DNA analysis of a skull indicates that the animal had a narwhal mother and beluga father.
- Climate
Cold War–era spy satellite images show Himalayan glaciers are melting fast
Declassified spy satellite photographs reveal that glacier melt in the Himalayas has sped up dramatically in the last two decades.
- Neuroscience
Female rats face sex bias too
In neurobiological studies, male lab animals tend to outnumber females, which are considered too hormonal. Scientists say it’s time for that myth to go.
