Add Yahoo as a preferred source to see more of our stories on Google. A new brain cancer test using spinal fluid detects tumors with 100% accuracy, offering safer diagnosis and fewer risky biopsies.

Eye-tracking tests can detect brain trauma deficits in patients more than a decade after their last concussion.

FORT MOORE, Ga. — The testing is simple: It requires only a computer and a mouse with two buttons — labeled “1” and “2” — but Pentagon officials believe it will have a huge impact on the military’s ...