Uncategorized
- Chemistry
Scientists Say: Joule
A joule is the amount of work done when a force of one newton moves an object one meter. It’s also the energy required to produce one watt for one second.
- Brain
Bubbles may underlie trauma’s brain injury
Many soldiers and accident victims sustain traumatic brain injury that can affect memory, thinking and body movements. New research now studies whether tiny bubbles caused by pressure waves may trigger that damage.
- Climate
Paris meeting yields climate agreement
It provides outlines and incentives for nations to curb fossil-fuel use. The goal is to limit global warming to no more than 2° Celsius (3.4 °Fahrenheit) above temperatures typical in the 1750s or earlier.
- Agriculture
New gene resists our last-ditch drug
Antibiotic resistance continues to grow. Now, scientists have found a tiny loop of DNA that resists a drug doctors use as a last line of defense.
- Animals
As big animals poop out
Whales move nutrients from deep ocean to surface waters. From there, nutrients move to land and fertilize continents. But the system is in trouble.
- Climate
Carbon dioxide has an unexpected effect in Antarctica
Antarctica’s frigid surface combined with excess carbon dioxide to create cooling above the remote continent, a new study finds.
- Health & Medicine
Too many Facebook friends?
Can you have too many Facebook friends? Maybe so, says a new study. It links heavy Facebook use to levels of a stress hormone called cortisol.
- Environment
Water: Getting the salt out
A new water-cleansing technology passes electricity through a flow of salty water. This will generate a zone of fresh water that can then be collected.
- Animals
Cool Jobs: Getting in your head
Experimental psychologists study animals and people to understand the roots of behavior.
- Health & Medicine
Nearsighted? Eye drops slow worsening vision
Myopia — or nearsightedness — is a growing problem worldwide. Low doses of an ancient drug could slow its development, without side effects.
- Animals
Scientists Say: Quoll
This small marsupial is about the size of a housecat. It lives in Australia and New Guinea, where it is under threat from toxic toads.
- Animals
Elephants’ trunks: These leaf-blowers snag food
Researchers at a Japanese zoo filmed two elephants using their trunks as leaf-blowers, pulling food toward them with puffs of air.
