Tech

PHILADELPHIA, Aug. 21, 2012 — With enough sunlight falling on home roofs to supply at least half of America's electricity, scientists today described advances toward the less-expensive solar energy technology needed to roof many of those homes with shingles that generate electricity.

CHAMPAIGN, Ill. — An ancient skull recovered from a cave in the Annamite Mountains in northern Laos is the oldest modern human fossil found in Southeast Asia, researchers report. The discovery pushes back the clock on modern human migration through the region by as much as 20,000 years and indicates that ancient wanderers out of Africa left the coast and inhabited diverse habitats much earlier than previously appreciated.

(Santa Barbara, Calif.) –– Sunscreens, lotions, and cosmetics contain tiny metal nanoparticles that wash down the drain at the end of the day, or are discharged after manufacturing. Those nanoparticles eventually end up in agricultural soil, which is a cause for concern, according to a group of environmental scientists that recently carried out the first major study of soybeans grown in soil contaminated by two manufactured nanomaterials (MNMs).

PHILADELPHIA, Aug. 20, 2012 — Coconut water really does deserve its popular reputation as Mother Nature's own sports drink, a new scientific analysis of the much-hyped natural beverage concluded here today at the 244th National Meeting & Exposition of the American Chemical Society (ACS).

PHILADELPHIA, Aug. 20, 2012 — Scientists today described development of a new fuel mixture to ease the major air pollution and cost problems facing cruise ships, oil tankers and container ships. These vessels tend to burn the cheapest and most highly polluting form of diesel fuel. Their report was part of the 244th National Meeting & Exposition of the American Chemical Society, the world's largest scientific society, being held here this week.

PHILADELPHIA, Aug. 20, 2012 — With concerns about the possible health and environmental effects of oil dispersants in the Deepwater Horizon disaster still fresh in mind, scientists today described a new dispersant made from edible ingredients that both breaks up oil slicks and keeps oil from sticking to the feathers of birds.

PHILADELPHIA, Aug. 20, 2012 — A new process for converting municipal waste, algae, corn stalks and similar material to gasoline, diesel and jet fuel is showing the same promise in larger plants as it did in laboratory-scale devices, the developers reported here today. It was part of the 244th National Meeting & Exposition of the American Chemical Society (ACS), the world's largest scientific society, which continues through Thursday.

An economically feasible way to store solar energy in existing residential power networks is the subject of an award winning paper written by two Virginia Tech electrical engineers and presented at an international conference.

PHILADELPHIA, Aug. 20, 2012 — With 1.3 billion tons of food trashed, dumped in landfills and otherwise wasted around the world every year, scientists today described development and successful laboratory testing of a new "biorefinery" intended to change food waste into a key ingredient for making plastics, laundry detergents and scores of other everyday products.

DENVER — Why do some colleges have persistently high levels of binge drinking? It may be because, at these schools, binge drinking is associated with high status and binge drinkers are happier with their college social experience than their non-binge drinking peers, suggests new research to be presented at the 107th Annual Meeting of the American Sociological Association.

Research from the University of Southampton and the National Oceanography Centre, Southampton has found that an imbalance of nutrients in reef waters can increase the bleaching susceptibility of reef corals.

Corals are made up of many polyps that jointly form a layer of living tissue covering the calcareous skeletons. They depend on single-celled algae called zooxanthellae, which live within the coral polyps.

A team of researchers at RIKEN and the University of Tokyo has demonstrated a new material that promises to eliminate loss in electrical power transmission. The surprise is that their methodology for solving this classic energy problem is based upon the first realization of a highly exotic type of magnetic semiconductor first theorized less than a decade ago - a magnetic topological insulator.

(Santa Barbara, Calif.) — Computing prime factors may sound like an elementary math problem, but try it with a large number, say one that contains more than 600 digits, and the task becomes enormously challenging and impossibly time-consuming. Now, a group of researchers at UC Santa Barbara has designed and fabricated a quantum processor capable of factoring a composite number — in this case the number 15 — into its constituent prime factors, 3 and 5.

Akron, Ohio, Aug. 19, 2012 — Working moms striving to "have it all" now can add another perk to their list of benefits — health. New research from University of Akron Assistant Sociology Professor Adrianne Frech finds that moms who work full time are healthier at age 40 than stay-at-home moms, moms who work part time, or moms who have some work history, but are repeatedly unemployed.

PHILADELPHIA, Aug. 19, 2012 — Drug counterfeiting is so common in some developing countries that patients with serious diseases in Southeast Asia and elsewhere are at risk of getting a poor-quality drug instead of one with ingredients that really treat their illness, a scientist involved in combating the problem said here today.