1,371 results
- Paleontology
Meet the tiny ancient whale named after King Tut
The newly discovered Tutcetus rayanensis lived about 40 million years ago. It was just 2.5 meters long and weighed less than 200 kilograms.
- Life
The Endangered Species Act is turning 50. Has it succeeded?
After 50 years, this landmark law has kept many species alive — but few wild populations have recovered enough to come off the “endangered” list.
- Paleontology
A colossal ancient whale could be the heaviest animal ever known
Perucetus colossus may have tipped the scales at up to 340 metric tons, but some scientists are skeptical it could have sustained that mass.
- Animals
50 years ago, the U.S. Navy enlisted sea lions and other marine mammals
Today, dolphins and sea lions in the U.S. Navy Marine Mammal Program protect harbors and participate in research on animal health and well-being.
- Life
These scientific discoveries set new records in 2023
This year’s record-breaking findings shed new light on human history and the most amazing feats in the animal kingdom.
- Animals
Bowhead whales may have a cancer-defying superpower: DNA repair
Bowhead whale cells repair damaged DNA exceptionally well, an ability that could prevent cancer and help the marine mammals live for centuries
- 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.
