Painting the roofs of buildings white may reduce the impact of the urban heat island effect by as much as 33 percent, significantly cooling off cities and helping society adjust to the changing climate, suggests a new study soon to be published in Geophysical Research Letters.

The study's authors used a newly developed computer model to simulate the amount of solar

Researchers say they have devised a new strategy that increases the likelihood of a recipient's immune system accepting embryonic stem cell transplants. The strategy involves fusing bone marrow cells to embryonic stem cells. Once fused, the hybrid cells have DNA from both the donor and recipient, raising hopes that immune rejection of embryonic stem cell therapies can be avoided without drugs. The findings appear in the February issue of the FASEB Journal

The government financial support that has bolstered America's commercial news industry since its colonial days is now in sharp decline and is likely to fall further, according to a report released today by the University of Southern California's Center on Communication Leadership and Policy. Because these cutbacks are occurring at the height of the digital revolution, they will have an especially powerful impact on an already weakened news industry.

Writing in the Journal of Applied Physiology, researchers say that many of the health benefits of aerobic exercise are due to the most recent exercise session, and the nature of these benefits can be greatly affected by the food we eat afterwards.

Researchers from George Washington University and the Institute of Vertebrate Paleontology and Paleoanthropology have discovered a new species of Jurassic theropod dinosaur called Haplocheirus sollers in Xinjiang, China. The team says the discovery illustrates how one family of dinosaurs called Alvarezsauridae came to look like birds independent of birds.

Along with drastic reductions in carbon dioxide emissions, a team of climate scientists says internationally coordinated research and field-testing on geoengineering the planet's atmosphere need to begin immediately in order to limit risk of climate change. In a new Nature editorial, the team argues that collaborative and government-supported studies on solar-radiation management, a form of geoengineering, would reduce the risk of nations' unilateral experiments and help identify technologies with the least risk.