World Topics

Jul 20, 2014

HIV diagnosis rate fell by third in U.S. over decade

The rate of HIV infections diagnosed in the United States each year fell by one-third over the past decade, a government study has found. Experts celebrated it as hopeful news that the AIDS epidemic may be slowing in the U.S. “It’s encouraging,” said Patrick ...

Jul 20, 2014

Study finds promise toward treating HIV and hepatitis C

A new hepatitis C drug has shown early promise in patients whose infection with both HIV and hepatitis C has made them traditionally difficult to treat, said a study Saturday. Patients were given Gilead Sciences’ sofosbuvir, a drug approved for the U.S. market in ...

Jul 20, 2014

Fruit colors evolved to please picky birds: study

Tropical Asian birds have a penchant for red and black — a proclivity that likely prompted jungle plants to sprout fruit in these colors, according to scientists. It has long been suspected that an abundance of red and black fleshy fruits in nature was ...

First U.S. cases of chikungunya mosquito virus reported

Jul 20, 2014

First U.S. cases of chikungunya mosquito virus reported

Health officials are reporting that for the first time, U.S. mosquitoes are spreading a virus that has been tearing through the Caribbean. Two people in Florida have domestically acquired chikungunya infections, officials said Thursday. In both cases, they said, a person infected with the ...

Higgs digs deeper into 'new physics' realm

Jul 19, 2014

Higgs digs deeper into 'new physics' realm

by Mariette Le Roux

Two years after making history by unearthing the Higgs boson, the particle that confers mass, physicists are broadening their probe into its identity, hoping this will also solve other great cosmic mysteries. Sifting through mountains of experimental data, they have now pieced together a ...

Sun-powered spacecraft to be launched in 2016

Jul 19, 2014

Sun-powered spacecraft to be launched in 2016

A tiny spacecraft designed to sail by the power of the sun is scheduled to launch atop a SpaceX rocket in 2016, a leading U.S. space enthusiast said July 9. The Planetary Society’s LightSail, an unmanned satellitelike craft known as a solar sail, aims ...

World still warming: climate report

Jul 18, 2014

World still warming: climate report

The world is getting warmer as greenhouse gases reach historic highs and Arctic sea ice melts, making 2013 one of the hottest years on record, international scientists said Thursday. The annual State of the Climate report 2013 is a review of scientific data and ...