Life
- Plants
Scientists Say: Urushiol
Poison ivy looks harmless, but its oil, urushiol, is not. This is the plant’s oil that leaves an itchy rash or blisters on your skin.
- Fossils
Fossils: Is this new species a human relative?
Fossils found in an underground cave in South Africa may be from a previously unknown species of the human genus, Homo.
- Earth
Cool Jobs: Finding foods for the future
What's for dinner... tomorrow? Scientists are developing new foods to meet the demands of the growing population in a changing world.
- Agriculture
Weed killers may go from plant to pooch
Dogs love to roll around in the grass. But if there is weed killer around, it could end up on — and in — our furry pals.
- Brain
Parents’ math anxiety can ‘infect’ kids
A study of first- and second- graders found that kids whose parents fear math learn less math at school ¬— but only when parents help with homework.
- Animals
Hummingbird tongues may be tiny pumps
Scientists had thought that hummingbird tongues work through capillary action. A new study, though, concludes they work like little pumps.
- Agriculture
‘Wildlife-free’ farms don’t make salads safer
Scientists find that removing wildlife from farms did not make raw vegetables safer to eat.
- Agriculture
Made in the shade
Agroforestry combines woody plants and agriculture. Growing trees alongside crops and livestock benefits wildlife, environment, climate — and farmers.
- Brain
Childhood stress can leave changes in the adult brain
A new study finds that young men who had experienced lots of stress early in life carried a lasting legacy — changes in the size and shape of their brains.
- Animals
Some pollutants made mice less friendly
Hormone-interfering chemicals make mice less social and may also alter their weight, a study finds. That affected the animals’ confidence — and behavior.
- Animals
Chikungunya wings its way north — on mosquitoes
A mosquito-borne virus once found only in the tropics has adapted to survive in mosquitoes in cooler places, such as Europe and North America.
- Animals
Boa constrictors stop their victims’ hearts
It’s a myth that boa constrictors kill by suffocation. A new study shows the snakes actually squeeze off blood flow, stopping the hearts of their prey.
