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A newborn’s immune system needs time to figure out what should be fought and what should be left alone. Conventional wisdom had it that early exposure to potential troublemakers, from peanuts to pets, could lead to allergy issues later. But recent research shows that having a dog or cat at home isn't likely to make children allergic to animals

Aids researchers and advocates were devastated in 2007, when a much anticipated vaccine against HIV unexpectedly failed to protect anyone in a clinical trial of 3,000 people. Even worse, the experimental inoculation, developed with money from the Merck pharmaceutical company and the National Institute of Allergy and Infectious Diseases, actually increased the chances that some people would later acquire HIV

Feeling uncertain about who you are and what you want to do with your life? Such doubt may lead you to sympathize with a radical or extremist group, according to a new study in the Journal of Experimental Social Psychology . Groups that rally around radical beliefs may provide a searching person with the sense of self and social identity they are lacking

A team of scientists has perfected the first practical nanoscale power generator, capable of generating useable electrical current from a mere squeeze of your fingers. In the future it'll be able to draw power from your pulse

Let’s say you are trying to sell cookies for a school fundraiser at the local mall, and you want to pick the ideal spot to set up your table. You’d probably look for an area with a lot of traffic.

Orexigen Therapeutics Inc. said Tuesday that U.S