What personal computers have gained in speed with the introduction of multicore processors that split up workloads they may be losing in reliability.
MIAMI—In three months hundreds of thousands of soccer fans are expected to descend on nine South African cities for the 2010 World Cup. But for so many visitors going to a country where more than 10 percent of the population is estimated to have HIV/AIDS, many public health experts are worried that the event will kick off a spike in transmission...
BOSTON—Economic bubbles are now famous, and the collapse of the dot-com business a decade ago made the bursting of bubbles infamous. A panel of experts here at the Going Green East conference yesterday ended up in a lively, entertaining and, at times, contentious debate over whether the growth of so-called clean tech--renewable energy and environmentally friendly technologies--has entered the bubble stage, if that bubble is bursting...or if a bubble has ever existed.Lucky for anyone reading these words, the conference organizers at Always On videotaped the panel and have already posted it online for viewing...
MIAMI—Malaria continues to be a global scourge, sickening some 300 million to 500 million people annually. Most of the resulting one million to three million malaria deaths occur in regions where it is highly endemic, such as sub-Saharan Africa and parts of south Asia.
Some parts of the world where malaria was once rampant, however—such as Central and South America—have seen morbidity and mortality rates of the disease cut in half in the past decade, reported specialists here Wednesday at the 14th annual International Congress on Infectious Diseases in Miami...
About a third of all Americans still lack broadband access to the Internet. At its Digital Inclusion Summit, held Tuesday in Washington, D.C., the Federal Communications Commission (FCC) provided a preview of its upcoming National Broadband Plan (NBP) to provide high-speed Internet access to the estimated 93 million people in the U.S...
Here's how to make a solar cell from silicon: take one solid block of doped silicon, saw it into thin wafers, layer said semiconductors beneath a panel of transparent glass, connect them to a metal electrode that can channel away the electrons knocked loose by incoming photons and turn it into a photovoltaic device...
Whereas most discarded plastic water and beverage bottles (those imprinted with a number 1 within a triangular arrow) can be recycled, the resulting second-generation plastic is generally unusable for making new plastic bottles...
Making aluminum requires a lot of electricity. That's because the metal bonds tightly to oxygen and it takes a lot of energy to break that bond. In essence, the process of making aluminum is a giant battery with the silvery metal being reduced to purity at the cathode while oxygen bonds with the carbon anode to make, you guessed it, CO2...
When the weather cools, ectothermic (cold-blooded) animals slow down, which should be good news for their potential prey. But the colorful chameleon has found a way to keep feeding at top speeds even in lower temps: an elastic-tissue tongue, which unlike regular muscles, can uncoil nearly as fast in lower temperatures as it can in warmer ones...
Vitamin D deficiency has been linked to a rapidly expanding inventory of ailments—including heart disease, cancer and the common cold. A new discovery demonstrates how the vitamin plays a major role in keeping the body healthy in the first place, by allowing the immune system's T cells to start doing their jobs.
In order for T cells to become active members of the body's immune system, they must transition from so-called "naive" T cells into either killer cells or helper cells (which are charged with "remembering" specific invaders)...
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