A group of Canadian and European researchers have unlocked the mystery of a gene with the potential to both regulate and block ovulation. The new study – a collaboration between the Université de Montréal in Canada and the Institut de génetique et biologie moléculaire et cellulaire of the Université de Louis Pasteur, Strasbourg, France – is published in the latest issue of the journal Genes & Development.

Borneo (Kalimantan) is the third largest island in the world. It is rich with a variety of indigenous orchid species that grow in the forests. Borneo's rain forests are also home to some extremely rare species of orchids, all highly valued for their exotic aromas and aesthetic beauty. It has been estimated that 2500 to 3000 orchid species grow in the forests of Borneo.

After soliciting and considering broad input from the scientific and HIV advocacy communities, the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), has determined that it will not conduct the HIV vaccine study known as PAVE 100. However, NIAID believes the vaccine developed by its Vaccine Research Center (VRC) is scientifically intriguing and sufficiently different from previously tested HIV vaccines to consider testing it in a smaller, more focused clinical study. Therefore, NIAID will entertain a proposal for an alternative study with one specific goal: to determine if the vaccine regimen significantly lowers viral load—the amount of HIV in the blood of vaccinated individuals who may later become infected with HIV.

Scientists here have found that certain substances from bacteria living in the human intestine cause the normally harmless Candida albicans fungus to become highly infectious.

Researchers have combined the efforts of two kinds of bacteria to produce hydrogen in a bioreactor, with the product from one providing food for the other. According to an article in the August issue of Microbiology Today, this technology has an added bonus: leftover enzymes can be used to scavenge precious metals from spent automotive catalysts to help make fuel cells that convert hydrogen into energy.