Think your sex life is complicated? Imagine having 7 sexes.

No, this isn't something out of an Octavia Butler novel. It’s Tetrahymena thermophila — a single-celled organism that goes way beyond male and female. It has seven different sexes to choose from. Now a new study published in PLOS has finally made sense of its bizarrely complex and seemingly random sex life. » 3/27/13 2:30pm 3/27/13 2:30pm

Stem cells prevent blindness, suggests first-ever human trial

It's one of the biggest milestones for stem cells since their discovery. Researchers yesterday published the first results of a clinical trial where doctors transplanted of stem cells into the eyes of patients suffering from a form of progressive blindness. And the preliminary results look very good. » 1/24/12 8:00am 1/24/12 8:00am

Fetuses can donate their stem cells to help heal their mothers' hearts

Researchers have known for some time that women who experience weakened heart function in the months before and after childbirth (a condition known as peripartum cardiomyopathy) recover more quickly than any other group of heart failure patients. Now, a team of researchers from Mt. Sinai School of Medicine thinks it… » 11/22/11 2:20pm 11/22/11 2:20pm

The Shark Immunity Factor that Could Save Your Life

Scientists have known for some time that dogfish sharks, like the one pictured up top, naturally produce a broad-spectrum antibiotic called squalamine in their livers. Now, new research into the cellular function of squalamine reveals how it also confers a broad-spectrum antiviral benefit for the shark — one we humans… » 9/20/11 12:58pm 9/20/11 12:58pm

A newly-discovered class of cells could one day help repair spinal cord…

Injuries to parts of the nervous system — the spinal cord, for example — are among the most devastating that human beings can sustain. But the recent discovery of a new class of spinal cord cell could soon lead to novel therapies capable of regenerating parts of the central nervous system. » 9/16/11 7:20am 9/16/11 7:20am