http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Risky behaviors such as not using condoms or having sex with multiple people put young adults at risk for contracting sexually transmitted diseases, but perhaps not as much as the characteristics of their sexual partners, University of Florida researchers say. http://www.physorg.com/news158050093.html Medicine & Health Sat, 04 Apr 2009 07:48:55 EST news158050093 Black girls who use marijuana are more likely to engage in risky sexual acts and contract a sexually transmitted disease, a new study finds. http://www.physorg.com/news137154666.html Medicine & Health Tue, 05 Aug 2008 11:31:06 EST news137154666