To track the spread of a virus, sometimes doctors keep careful data about each case of the virus that is discovered. But how easy is it to track the progress of a virus? Do this activity and see ...

LONDON Several teams of scientists around the world have, for some time, been studying the possibility that a genetic mutation perpetuated by the organism responsible for bubonic plague, or the Black ...

But according to a recent book by Norman Cantor, In the Wake of the Plague: The Black Death and the World it Made, that disease also forged a new world dedicated to the proposition that men had ...