Tear gas is a chemical weapon commonly used by law enforcement officers for crowd control. It is primarily used to cause irritation to the eyes, mouth, throat, lungs, and skin, making it difficult ...

Celebrated to commemorate the birthday of its discoverer Dr Henrik Sjogren the point of celebrating World Sjogrens Day is to ...

The eyes and protruding mouth of stingrays, like the one pictured at the World Aquarium in St. Louis, help them swim with greater thrust and accelerated cruising, according to a new study.