A mathematical model predicts that women must take the antiretroviral medication Truvada daily to prevent HIV infection via vaginal sex, whereas just two doses per week can protect men from HIV infection via anal sex. This finding helps explain why two large clinical trials testing HIV pre-exposure prophylaxis, or PrEP, in women failed to show efficacy.
Exciting results from an innovative, multicultural, five-year initiative, known as the Alliance to Reduce Disparities in Diabetes, have been published, revealing that a new model of chronic disease management for vulnerable populations...Show More Summary
Research suggests air pollutants released by unconventional oil and gas production are well over recommended levels in the US. High levels of benzene, hydrogen sulfide and formaldehyde were found. The study is the first to be based on community sampling by people who live near production sites and could be used to supplement official air-quality monitoring programs.
With only 90,000 breeding individuals sparsely distributed across 15 US states, the Swainson's warbler is a species of high conservation concern that, for decades, has left conservationists with little confidence that its populations would ever be fully secure. Show More Summary
Copper could help to prevent the spread of Ebola, researchers have found. While hand washing, disinfectants and quarantine procedures alone have been found to be insufficient to contain the spread of the virus, research has offered promising...Show More Summary
Astronomers have long sought to understand exactly how the universe evolved from its earliest history to the cosmos we see around us in the present day. In particular, the way that galaxies form and develop is still a matter for debate. Show More Summary
The central nervous system in vertebrates develops from the neural tube, which is the basis for the differentiation in spinal cord and brain. Researchers have demonstrated for the first time the in vitro growth of a piece of spinal cord in three dimensions from mouse embryonic stem cells. Show More Summary
Researchers have controlled interplay of light and matter at the level of individual photons emitted by rubidium.
Today, the ancient city of Rome welcomed an important new initiative for the large-scale integration of grids and of renewables sources into Europe’s energy mix, with nearly 40 leading organisations from research, industry, utilities,...Show More Summary
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Letter to the Editor Watts Up With That? 31st October 2014 For decades green extremists have been spreading doomsday forecasts of global warming. But where do we find the greatest abundance of life on land? Follow the equator around the globe – the Amazon, the Congo, Kenya, Indonesia and New Guinea – all places where…
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The United States is undergoing a drastic change in marijuana policy. Two states legalized recreational use for adults in 2012, and next week, citizens of Oregon, Alaska and the District of Columbia will vote for or against legalization in their area. Show More Summary
Connectivity cost calculations for conservation corridors Where are conservation dollars best invested to connect fragmented habitats? Sara Torrubia and colleagues test their model balancing restoration costs with connection qualityShow More Summary
This news release is available in French. read more