Scientists have discovered how allergic reactions to cats are triggered, raising hopes of preventative medicine.

A University of Cambridge team has identified how the body's immune system detects cat allergen, leading to symptoms such as coughing and sneezing.

Washington, July 24 (ANI): A new study has found that water-carved valleys at four different locations on Mars appear to have been caused by runoff from orographic precipitation-snow or rain that falls when moist prevailing winds are pushed upward by mountain ridges.

You come in from a summer hike covered with itchy red mosquito bites, only to have your friends innocently proclaim that they don’t have any. Or you wake up from a night of camping to find your ankles and wrists aflame with bites, while your tentmates are unscathed.

"Consider again that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every