Researchers say they can grow large amounts of the transplantable tissue using cells from a small number of donors.

Gene therapy can be used to transform some of a pig's regular heart cells into pacemaker cells, according to a new study in Science Translational Medicine.

Spring break season is here and many teenage girls may be tempted to take their first drink. The AAAS Science Inside Alcohol Project suggests that parents, teachers and caregivers help girls delay that drink by telling them of scientific research that shows they may be more vulnerable than boys to alcohol-related problems.