1,378 results
- Animals
Migratory fish species are in drastic decline, a new UN report details
The most comprehensive tally of how migrating animals are faring looks at more than 1,000 land and aquatic species and aims to find ways to protect them.
- Oceans
‘Jet packs’ and ultrasounds could reveal secrets of pregnant whale sharks
Only one pregnant whale shark has ever been studied. New underwater techniques using ultrasound and blood tests could change that.
- Anthropology
Surprisingly long-lived wild female chimps go through menopause
Chimpanzees in Uganda are the first known example of wild, nonhuman primates experiencing the hormonal changes, raising questions about how menopause evolved.
- Life
Orca moms baby their adult sons. That favoritism pays off — eventually
By sharing fish with their adult sons, orca moms may skimp on nutrition, cutting their chances of more offspring but boosting the odds for grandwhales.
- Health & Medicine
A catalog of all human cells reveals a mathematical pattern
Smaller cells occur in larger numbers in the human body, and cells of different size classes contribute equally to our overall mass.
- Animals
Some mysteries remain about why dogs wag their tails
Wagging is a form of communication, with different wags meaning different things, but scientists know little about the behavior’s evolution in dogs.
- Life
Remote seamounts in the southeast Pacific may be home to 20 new species
A recent expedition to the intersection of two undersea mountain chains has revealed a new seamount and a rich world of deep-sea biodiversity.
- Paleontology
Megalodon sharks may have become megapredators by running hot
O. megalodon sharks were warm-blooded megapredators. But colder-blooded great white sharks may have had an evolutionary edge when food sources dwindled.
- Animals
Why some hammerhead sharks seem to ‘hold their breath’ during dives
Scalloped hammerhead sharks in Hawaii seem to limit the use of their gills during deep dives to prevent losing heat to their surroundings.
- Animals
Here are 3 people-animal collaborations besides dolphins and Brazilians
Dolphins working with people to catch fish recently made a big splash. But humans and other animals have cooperated throughout history.
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The animal kingdom never ceases to amaze
Editor in chief Nancy Shute revels in the wonder of animals, from psychedelic toads to extinct pterosaurs.
- Animals
‘Wonderful nets’ of blood vessels protect dolphin and whale brains during dives
Complex networks of blood vessels called retia mirabilia that are associated with cetaceans’ brains and spines have long been a mystery.
