Researchers have identified ways in which chemotherapy can damage healthy cells and found that some drugs can add decades of "age" to otherwise normal blood cells.

A study suggests that carefully controlled electrical stimulation of the brain may improve math skills, most significantly in people with weaker connections in a specific part of the brain.

Astronomers have spotted another never-before-seen "nova" blaze to life in the night sky. This may be the first time that simultaneous stellar explosions have been visible to the naked eye in recorded history.

Lake Superior Zoo in Minnesota announced it has given a brown bear the world's largest dental crown, with the bear now sporting a silver-colored metal canine