735,951 articles

Dysfunctional Families And Bad Neighborhoods May Worsen Asthma In Children And Adolescents

A lack of family support and problems in one's neighborhood are associated with greater asthma symptoms in children and adolescents, according to researchers. Social environment has long been thought to be an important factor in asthma manifestations in youth, but few studies have empirically tested social factors at the family, peer and neighborhood levels and their implications for childhood...

Going Fishing? Catch-and-release In Less Than Four Minutes, Please

Recreational fishing that involves catch-and-release may seem like just good fun, and that released fish go on to live happily ever after, but a recent study shows that improper handling techniques by anglers can increase the likelihood of released fish being caught by predators. After the stress of the catch and lack of oxygen from being out of water, the fish is in a weakened state.

Laser joining of solar cells

A single solar cell produces a relatively low output - it`s a case of strength in numbers. Tiny strips of metal are used to link cells together. If the laser soldering temperature is too high, the solder joint may fracture. A new system provides automatic temperature regulation.

New particles get a mass boost

A sophisticated, new analysis has revealed that the next frontier in particle physics is farther away than once thought. New forms of matter not predicted by the Standard Model of particle physics are most likely twice as massive as theorists had previously calculated, according to a just-published study.

Watermarks for mobile television

For centuries, watermarks have protected written documents from forgery. Now their digital brothers are to prevent videos from being released in the Internet before their television premieres. Electronic watermarks are used to locate leaks.

Genetic differences in clover make one type toxic

That clover necklace you make for your child could well be a ring of poison. That`s because some clovers have evolved genes that help the plant produce cyanide - to protect itself against little herbivores, such as snails, slugs and voles, that eat clover. Other clover plants that do not make cyanide are found in climates with colder temperatures. So, in picking your poison, er, clover, ecology...

NASA satellite sees solar hurricane detach comet tail

A NASA satellite has captured the first images of a collision between a comet and a solar hurricane. It is the first time scientists have witnessed such an event on another cosmic body. One of NASA's pair of Solar Terrestrial Relations Observatory satellites, known as STEREO, recorded the event April 20.

Scientists claim citrus originated in Australasia

Scientists at the Centre for Plant and Food Science at the University of Western Sydney have questioned the long-established perception that citrus originated in Southeast Asia. They believe it may have originated closer to home - in Australia, New Caledonia and New Guinea.

Three-way mating game of North American lizard found in distant European relative

An intricate three-way mating struggle first observed in a species of North American lizard has been discovered in a distant relative, the European common lizard. The two species are separated by 5,000 miles and 175 million years of evolution, yet they share behavioral and reproductive details right down to the gaudy colors of the males, according to new research published in the November issue of...

Asking the Boss for a Raise

Waiting until your boss is in a good mood to ask for a raise may be a popular strategy, but what if the boss knows you know she is a good mood?

Good Vibrations: Using Terahertz Radiation to Control Material Properties

A collaboration led by researchers with the U.S. Department of Energy`s Lawrence Berkeley National Laboratory has used molecular vibrations, triggered by ultrafast pulses of terahertz radiation, to change a manganite crystal from an electrical insulator into a conductor. The ability to induce dramatic phase-changes in solid materials through select vibrations holds great promise for future...