From Molecules to Organisms: Structures and Processes
- Environment
Thirdhand smoke poses lingering danger
The pollutants in cigarette smoke can linger indoors for hours. Indeed, they may pose risks long after any visible smoke is gone.
- Health & Medicine
The secret of fast runners: symmetry
Science had shown that animals and people with symmetrical bodies tend to be stronger and healthier. Now researchers find they can predict the best sprinters by measuring the top runners’ knees.
- Microbes
Germs help each other fend off antibiotics
Drug-resistant bacteria can cause persistent infections. A new study finds these germs fight drugs in different ways. And they can swap various compounds, increasing their neighbors’ chances of overcoming the drugs meant to kill them.
- Microbes
Recycling the dead
When things die, nature breaks them down through a process we know as rot. Without it, none of us would be here. Now, scientists are trying to better understand it so that they can use rot — preserving its role in feeding all living things.
- Brain
Learning rewires the brain
Brain cells actually change shape as we learn. It’s one way we cement new knowledge. And much of the action happens as we sleep.
- Animals
Germs explain some animal behaviors
The bacteria that people and other animals host in and on their bodies are invisible to the eye. Yet they can play a very visible role in behavior. It’s something scientists are just coming to appreciate.
- Tech
Fashioning inks to ‘print’ tissues
3-D printing may one day create life-saving tissues and organs for transplants. But first researchers are learning how to tailor cell-filled “inks” for use in inkjet printers.
- Animals
Elephants appear to be super sniffers
Elephants are not only massive, but also possess the most odor-detecting genes of any animal known, new research shows.
- Environment
Bug-killer linked to decline in birds
One of the most popular chemicals used to protect crops from bugs may also take a toll on birds, a Dutch study finds. U.S. farmers also rely on these insecticides, a second study finds.
- Animals
Keep the lights on for National Moth Week
Helping scientists is as easy as leaving your porch light on. Photograph the moths you see and upload them to the Internet for science.
- Health & Medicine
Young blood: The elixir of youth?
Old mice show improved memory when blood from young mice circulated through their brains, a new study finds. Other studies suggest one ingredient in that young blood might be all it takes to deliver benefits.
- Science & Society
Dissect a frog and keep your hands clean
Dissecting frogs can be a fun and useful way to learn about anatomy. If you don’t have a frog on hand, here are three smartphone apps that allow you have your frog legs and dissect them, too.
