A recent study published in the journal, The Auk, suggests drought conditions are delaying nesting by two weeks or more for some Sonoran Desert bird species, such as Black-tailed Gnatcatchers and Verdins. Despite recent rainfall, drought conditions persist in much of the Southwestern US drought negatively impacts, many wildlife species, making it harder to maintain their numbers, even when adapted to a dry environment.
A new study links physical violence against women by male partners to a disruption of a key steroid hormone that opens the door potentially to a variety of negative health effects.
Researchers at the University of Louisville's James Graham Brown Cancer Center have identified for the first time mutations that destabilize a DNA structure that turns a gene off. These mutations occur at four specific sites in what is known as the 'hTERT promoter' in more than 75 percent of glioblastomas and melanomas.
Northwestern University researchers have developed a noninvasive MRI approach that can detect the Alzheimer's disease in a living animal, well before typical Alzheimer's symptoms appear. The research team developed an MRI probe that pairs a magnetic nanostructure with an antibody that seeks out the amyloid beta brain toxins responsible for onset of the disease. The accumulated toxins, because of the associated magnetic nanostructures, show up as dark areas in MRI scans of the brain.
Scientists are making it easier for pharmaceutical companies and researchers to see the detailed inner workings of molecular machines.
Noise pollution in the ocean is increasingly recognized as harmful to marine mammals, affecting their ability to communicate, find mates, and hunt for food. But what impact does noise have on invertebrates -- a critical segment of the food web?
Sound waves can precisely position groups of cells for study without the danger of changing or damaging the cells, according to a team of Penn State researchers who are using surface acoustic waves to manipulate cell spacing and contact.
Scientists studying the distribution of four commercial and recreational fish stocks in Northeast US waters have found that climate change can have major impacts on the distribution of fish, but the effects of fishing can be just as important and occur on a more immediate time scale. The four species studied -- black sea bass, scup, summer flounder, and southern New England/Mid-Atlantic Bight winter flounder -- have varied in abundance and have experienced heavy fishing pressure at times over the past 40 years.
Researchers have found that a Rocky Mountain mustard plant alters its physical appearance and flowering time in response to different environmental conditions, suggesting some species can quickly shape-shift to cope with climate change without having to migrate or evolve.
The health effects of air pollution are a major concern for urban populations all over the world. A new study from Tel Aviv University provides new evidence linking high exposure to air pollution to an increased risk of congenital malformations.