A new study suggests people suffer infections, itching and chronic complications for their body art.
Hard-to-kill anthrax spores may explain why the Department of Defense accidentally sent out "live" samples of the bacteria, experts say.
Learn about how scientists found the evidence of the earliest suspected murder in human history.
These ancient humans had small teeth
BEIJING (Reuters) - China said on Friday a South Korean man had tested positive for Middle East Respiratory Syndrome (MERS), China's first confirmed case, but that it had not found any symptoms in the 38 people who had close contact with him.