Letters of reference are the dirty work of science—an administrative duty that nobody wants to be bothered with. Yet they are an indisputably important part of being a scientist. In 2000, US ...

Similarly, a 67-year-old reviewer with arthritis can hike “14 to 16 miles a day, painlessly” thanks to this knee brace. Buy ...

It all sounds like something out of “Star Trek,” but the researchers behind the project believe they have found a way to painlessly inject a vaccine into a patient without needles. The experts ...