science

But rather than a gym-soaked t-shirt, it needs just one millionth of a litre of sweat to do the testing.

The team - in South Korea - showed the sensor was accurate and think it could eventually help patients with diabetes.

And in extra tests on mice, the sensor was hooked up to a patch of tiny needles to automatically inject diabetes medication.

The team at the Seoul National University were trying to overcome the need for "painful blood collection" needed in diabetes patients.

But in some ways, he's just as forgetful as the rest of us.

"I still forget plenty of basic things, like where I left my keys," said Mullen, a medical student at the University of Mississippi.

A glimpse of possible success in this elusive goal was seen Thursday. Using stem cell technologies, researchers generated human cells and human tissues in the embryos of pigs and cattle. Their research appeared in the journal Cell.

It lives in deep water near the US island of Guam in the western Pacific.

National Geographic Magazine says it's not seen very often and is a milky-yellow colour because it's so dark where it lives.

Professor Severus Snape is part of the name because he kept "one of the most important secrets in the story, just like the present new species which has eluded discovery until now, nearly 20 years after it was first collected".