Ivory Bill WoodPeckerEd : Don't miss the video news release (thanks to Eurekalert) describing the sighting - you even get to see (very briefly) the bird in flight!

Long believed to be extinct, a magnificent bird - the ivory-billed woodpecker - has been rediscovered in the Big Woods of eastern Arkansas. More than 60 years after the last confirmed sighting of the species in the United States, a research team today announced that at least one male ivory-bill still survives in vast areas of bottomland swamp forest.

Published in the journal Science on its Science Express Web site (April 28, 2005), the findings include multiple sightings of the elusive woodpecker and frame-by-frame analyses of brief video footage. The evidence was gathered during an intensive year-long search in the Cache River and White River national wildlife refuges involving more than 50 experts and field biologists working together as part of the Big Woods Conservation Partnership, led by the Cornell Laboratory of Ornithology at Cornell University and The Nature Conservancy.

A severe allergic reaction to a medication robbed Elma Phifer of her vision two decades ago when she was 39. The reaction scarred her corneas and reduced the ability of her eyes to soothe their damaged surfaces by remaining moist.

Farmers growing genetically modified rice in field trials in China report higher crop yields, reduced pesticide use and fewer pesticide-related health problems, according to a study by researchers in China and at Rutgers University and the University of California, Davis.

Results of the study will appear in the April 29 issue of the journal Science.

New research shows that farmers who used agricultural insecticides experienced increased neurological symptoms, even when they were no longer using the products. Data from 18,782 North Carolina and Iowa farmers linked use of insecticides, including organophosphates and organochlorines, to reports of reoccurring headaches, fatigue, insomnia, dizziness, nausea, hand tremors, numbness and other neurological symptoms. Some of the insecticides addressed by the study are still on the market, but some, including DDT, have been banned or restricted.

Luca Technologies LLC today announced that its researchers have confirmed the presence of a resident, methane-generating community of microorganisms ("microbial consortium") in substrate samples taken from the 110,000 acre Monument Butte oilfield located in North Eastern Utah. This site represents the latest in a series of active "GeobioreactorsTM" that Luca Technologies has identified since its first demonstration of this phenomenon in the Powder River Basin coalfields of Wyoming.

Researchers at Yale, in collaboration with NIH researchers, have identified a specific protein molecule that is used by the immune system for detection of parasitic infections, leading the way for development of future vaccines to combat these infections.

Researchers using an extremely fast and accurate imaging technique have shed light on the tiny movements of molecular motors that shuttle material within living cells. The motors cooperate in a delicate choreography of steps, rather than engaging in the brute-force tug of war many scientists had imagined.

Many pathogens are able to infect multiple species within a community and are commonly transmitted across species. Cross-species transmission is often associated with pathogen emergence and therefore has been considered as a negative factor for humans, wildlife, and species of agricultural importance. Many pathogens like malaria, Lyme disease or West Nile encephalitis that infect multiple hosts are commonly transmitted by vectors, and their transmission rate is often thought to depend on the proportion of hosts or vectors infected (i.e. frequency dependence). A study, to appear in the July 2005 issue of The American Naturalist, by Volker H. W. Rudolf and Janis Antonovics provides an important conceptual counterexample to the idea that sharing pathogens necessarily affects host populations negatively.

Two Scandinavian studies have provided further evidence that environmental factors could be affecting men's reproductive health.

The studies, published online today (Thursday 28 April) in Europe's leading reproductive medicine journal Human Reproduction, suggest that environmental pollutants could be changing the ratio of sperm carrying the X or Y (sex determining) chromosomes and that they could be contributing towards male reproductive disorders.

UAB and international scientists studying iron-overload disorders have made the unexpected discovery that Asians and Pacific Islanders have the highest levels of iron in their blood of all racial/ethnic groups who were screened.

A number of articles explore the use of positron emission tomography (PET) and small animal imaging--nonsurgical techniques that open the door to understanding and treating human diseases--in the April issue of the Society of Nuclear Medicine's Journal of Nuclear Medicine.