Science & Technology

Everybody itches. Sometimes itch serves as a useful warning signal — there's a bug on your back! But sometimes itch arises for no apparent reason, and can be a torment.

Think of the itchy skin disorder eczema, or the constant itching caused by some cancers. "A very high percentage of people who're on dialysis for chronic kidney disease develop severe itch that's very difficult to manage," says Dr. Ethan Lerner, an associate professor of dermatology at Harvard Medical School.

Scientists now say they've got a much better clue as to how itch happens.

Quite a few medical school students have something against obese people, and most of those who have such a bias are unaware of it.

That's the conclusion of study appearing in the July issue of Academic Medicine. It was conducted at the Wake Forest School of Medicine in Winston-Salem, N.C. The study's author says the subconscious judgments could affect how patients are treated.

With memories of last year's Superstorm Sandy still fresh, NOAA is warning East Coasters and those farther inland to brace for another active Atlantic season, predicting that as many as six major storms will develop between the beginning of June and the end of November.

Scientists have completed the first assessments of how readily the H7N9 flu virus in China can pass among ferrets and pigs. The mammals provide the best inkling of how dangerous these bugs may become for humans.

The news is both bad and good. They've found the new bird virus is easily passed between ferrets sharing the same cage.

This feels a bit like deja vu.

Scientists report a major breakthrough in human stem-cell research. And then just a week later, the findings come under fire.

Biologists at Oregon Health & Science University said May 15 that they had cloned human embryos from a person's skin cell.

A 3-D printer is being credited with helping to save an Ohio baby's life, after doctors "printed" a tube to support a weak airway that caused him to stop breathing. The innovative procedure has allowed Kaiba Gionfriddo, of Youngstown, Ohio, to stay off a ventilator for more than a year.