6,677 results
- Life
Head lice hitched a ride on humans to the Americas at least twice
The genes of head lice record the story of their human hosts’ global voyages.
- Life
Flowers pollinated by honeybees make lower-quality seeds
Honeybees are one of the most common pollinators. But their flower-visiting habits make it harder for some plants to produce good seeds.
- Animals
The last leg of the longest butterfly migration has now been identified
After a long journey across the Sahara, painted lady butterflies from Europe set up camp in central Africa to wait out winter and breed.
- Health & Medicine
Newfound immune cells are responsible for long-lasting allergies
A specialized type of immune cell appears primed to make the type of antibodies that lead to allergies, two research groups report.
- Ecosystems
How an invasive ant changed a lion’s dinner menu
An invasive ant is killing off ants that defend trees from elephants. With less cover, it’s harder for lions to hunt zebras, so they hunt buffalo instead.
- Animals
Some African birds follow nomadic ants to their next meal
Specialized interactions between birds and driver ants in Africa could help explain why the birds are especially sensitive to forest disturbances.
- Anthropology
Ancient primates’ unchipped teeth hint that they ate mostly fruit
Of more than 400 teeth collected, just 21 were chipped, suggesting that early primate diets were soft on their choppers.
- Health & Medicine
Four things to know about malaria cases in the United States
Five people have picked up malaria in the United States without traveling abroad. The risk of contracting the disease remains extremely low.
- Paleontology
Insect bites in plant fossils reveal leaves could fold shut millions of years ago
The 252-million-year-old fossil leaves have symmetrical holes, which suggest an insect bit through the leaves when they were folded.
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- Space
During the awe of totality, scientists studied our planet’s reactions
Earth’s atmosphere was a big area of focus for scientists studying the total solar eclipse on April 8, 2024.
- Animals
Ximena Velez-Liendo is saving Andean bears with honey
By training beekeepers, biologist Ximena Velez-Liendo is helping rural agricultural communities of southern Bolivia coexist with Andean bears.
