
Teens make real advances in biomedical science

Scientists transplant a rebuilt kidney into a rat

The germ responsible carries genes from other flu viruses

Critters spread many germs that can sicken each other — and even kill people
Wildlife can sometimes become infected with germs shed by people

Unusual, versatile cells hold the key to regrowing lost tissues

A mysterious infection has been spreading for almost a year

Strong medicine may have rid a newborn of deadly HIV

New study connects pollution to several common diseases that affect the lungs and airways

Volunteers face problems on a make-believe mission to Mars