A new study led by a Stanford researcher shows that more than 80 percent of the new farmland created in the tropics between 1980 and 2000 came from felling forests, which sends carbon into the atmosphere and drives global warming.

Cornell is leading efforts to manage outbreak populations of the emerald ash borer (EAB), a beetle that has the potential to devastate ash trees in the Northeast.

ANN ARBOR, Mich.—Vitamin A and beta-carotene supplements are unsafe for HIV-positive women who breastfeed because they may boost the excretion of HIV in breast milk—thereby increasing the chances of transmitting the infection to the child, a pair of new studies suggest.

The science behind gecko toes holds the answer to a dry adhesive that provides an ideal grip for robot feet.

The second Wisconsin Poverty Report shows the rate of poverty in Wisconsin worsened in 2008, with more than 11 percent of the state’s population living in need, including one in seven children and one in 10 elderly residents.

University Park, Pa. — Cow belches, a major source of greenhouse gases, could be decreased by an unusual feed supplement developed by a Penn State dairy scientist.

Over tens of millions of years, a rubble-pile asteroid less than 10 kilometers in diameter can spin up to a speed that allows the asteroid to split in two, forming a proto-binary system.

University Park, Pa. — Health benefits from polyphenol antioxidants — substances found in many fruits and vegetables — may come at a cost to some people.