Scientists in New York are reporting development of a new biodegradable “nanohybrid” plastic that can be engineered to decompose much faster than existing plastics used in everything from soft drink bottles to medical implants. The study is scheduled for the Nov. issue of ACS’ Biomacromolecules.

The plastic is a modified form of polyhydroxybutyrate (PHB), a promising biodegradable plastic produced from bacteria that has been widely hailed as a “green” alternative to petroleum-based plastic for use in packaging, agricultural and biomedical applications. Although commercially available since the 1980s, PHB has seen only limited use because of its brittleness and unpredictable biodegradation rates.

A bioprospecting expedition to Iceland’s famed hot springs has yielded new strains of bacteria with potential of producing hydrogen and ethanol fuels from wastewater now discharged from factories that process sugar beets, potatoes and other plant material. The microbes hold potential for combining energy production with wastewater treatment, according to a report on the discovery scheduled for the Jan./Feb. issue of ACS’ Energy & Fuels.

In the study, Perttu E. P. Koskinen and colleagues point out that ethanol and hydrogen are two leading eco-friendly candidates for supplementing world supplies of oil, coal, and other conventional fuels.

Scientists in Pennsylvania are reporting development of a fuel cell that uses pollution from coal and metal mines to generate electricity, solving a serious environmental problem while providing a new source of energy. They describe successful tests of a laboratory-scale version of the device in a study scheduled for the Dec. 1 issue of ACS’ Environmental Science & Technology.

In the new study, Bruce E. Logan and colleagues point out that so-called acid-mine drainage (AMD) is a serious environmental problem that threatens the health of plants and animals as well as the safety of drinking-water supplies, due mainly to the high acidity of contaminated waters and its high content of metals, particularly iron.

Males with twin sisters are more likely to develop anorexia nervosa than other males, including males with a twin brother. Does exposure to female sex hormones in the womb increase the risk of getting it? If so, is anorexia a sex steroid hormone issue rather than strictly a psychological one?

“Anorexia nervosa is approximately 10 times more common in females than in males,” write study authors in the Archives of General Psychiatry. “The reasons for this difference are not known, and it is likely that their unraveling will represent an important step forward in the understanding of the etiopathogenetic factors involved in the development of eating disorders.”

A series of studies presented today at the American College of Neuropsychopharmacology (ACNP) annual meeting elucidates evidence that there is a genetic link between schizophrenia and cancer, providing a surprising possible scientific explanation for lower rates of cancer among patients with schizophrenia – despite having poor diets and high rates of smoking – and their parents.

Researchers at the National Institute for Mental Health (NIMH) emphasize that many of the genes associated with schizophrenia are the same as the genes associated with cancer, but that the cells that have these genes use them in opposite ways in the two disorders.

Brain overgrowth in the latter part of an infant’s first year may contribute to the onset of autistic characteristics, according to research presented at the American College of Neuropsychopharmacology (ACNP) annual meeting. These findings support concurrent research which has found brain overgrowth in autistic children as young as two years old.

Lead researcher Joseph Piven, M.D., Director of the Neurodevelopmental Disorders Research Center at the University of North Carolina, Chapel Hill and an ACNP member, says that behavioral studies of infants at high risk for autism suggest that the onset of most behavioral symptoms which define the disorder, such as problems with and social interaction, also occur at about age one.

NUSA DUA, Indonesia, December 8 -- The World Future Council (WFC),a global forum of 50 respected personalities who give voice to the shared ethical values of citizens worldwide that includes Bianca Jagger, Chair of the Executive Committee, Tariq Banuri and Anders Wijkman, today accused delegates from the world's wealthiest nations, above all the USA and Canada, of putting the brakes on negotiations.

Industrial countries, especially the US they say, still refuse to commit to drastic cuts in CO2 emissions. This suggests that an agreement on binding climate protection resolutions for the period after 2012 is becoming less likely.

Industrialised countries are attempting to tie-in their emissions commitments with concessions from emerging countries such as China and Brazil.

In science fiction, binary stars are often shorthand for the exotic. A pair of suns rising over some alien landscape quickly communicates the foreign and the outlandish. But that reaction just shows our bias toward what is familiar. Out in the universe, twosomes are nothing out of the ordinary. Astronomers think that a third to more than half of all stars are part of binary systems.

Northwestern University's Ronald Taam has used a progression of systems at NCSA over the last seven years to explore how these binaries operate. Taam works closely with Paul Ricker, a research scientist at NCSA and an assistant professor of astronomy at the University of Illinois at Urbana-Champaign, studying what is known as the common envelope phase.

NEW YORK, December 8 /PRNewswire/ --

Christmas trees are appearing in homes throughout the country and families prepare for the holiday season. But in this age when we are all asked to be aware of the impact we are having on the environment, is the right choice to purchase an artificial tree and use it year after year, or go in search of the perfect living tree to be the centerpiece of our holiday decorating?

The answer may surprise you.