The invasive nature of cancers in general, and malignant gliomas in particular, is a major clinical problem rendering tumors incurable by conventional therapies.

Using a novel invasive glioma mouse model established by serial in vivo selection, new research has identified the p75 neurotrophin receptor (p75NTR) as a critical regulator of glioma invasion.

About 40 percent of deaths worldwide are caused by water, air and soil pollution, concludes David Pimentel, Cornell professor of ecology and agricultural sciences.

Such environmental degradation, coupled with the growth in world population, are major causes behind the rapid increase in human diseases, which the World Health Organization has recently reported. Both factors contribute to the malnourishment and disease susceptibility of 3.7 billion people, he says.

Pimentel and a team of Cornell graduate students examined data from more than 120 published papers on the effects of population growth, malnutrition and various kinds of environmental degradation on human diseases.

Do the overall efficiencies of renewable energy sources, such as wind, solar, and geothermal add up in terms of their complete life cycle from materials sourcing, manufacture, running, and decommissioning? Researchers in Greece have carried out a life cycle assessment to find the answer.

Increasing energy consumption and a growing world population implies shrinking reserves of fossil fuels. While the use of fossil fuels brings with it the problem of carbon dioxide emissions and climate change. Continued dependence on fossil fuels coupled with the pressing global issue of climate change has pushed the concept of renewable energy sources to the top of the agenda.

A recent Newsweek magazine cover story on global warming contained significant errors and used outdated scientific material in its representation of global climate data collected by satellites, according to the scientists who maintain that dataset at The University of Alabama in Huntsville.

Dr. John Christy and Dr. Roy Spencer, who created and maintain the global temperature dataset, recently addressed how instruments aboard NOAA satellites collect temperature data and about the accuracy of that data.

If you’re among the creatures that produce scads of genetically identical offspring – like microbes, plants or water fleas - you have a good evolutionary strategy, a new study says.

These creatures provide a chance to wonder about the clones raised in near-identical environments that turn out differently than their kin. In this week’s Proceedings of the National Academy of Sciences, a Michigan State University zoologist and others report how the greater good of a genetic pool of identical organisms is affected when a few individuals break from the developmental pack.

Men really only think about women, it seems, even to the point of evolving to be more attractive to them.

Men with large jaws, flaring cheeks and large eyebrows are sexy, at least in the eyes of our ancestors, researchers at the Natural History Museum have discovered. Facial attractiveness played a major role in shaping human evolution, as studies on our fossil ancestors have shown our choice of sexual partner has shaped the human face.

Dr Eleanor Weston, palaeontologist at the Natural History Museum said, ‘The evolution of facial appearance is central to understanding what makes men and women attractive to each other.