These Medical Devices Are Inserted Into 500,000 Patients Each Year — but Are Tough to Sterilize

In hospitals around the world, the snakelike duodenoscope is regarded as an indispensable tool for diagnosing and treating diseases of the pancreas and bile ducts. But these fiber-optic devices have a remarkable drawback: Although they are inserted into the upper part of the small intestine through the mouth and constantly reused, they cannot be sterilized…

What Drives People to Mass Shootings?

On Monday morning, President Trump made his first televised statement about the mass murders committed over the weekend in El Paso, Tex., and Dayton, Ohio. He called for action to “stop mass killings before they start,” citing what he said were a number contributing factors: the contagious nature of mass murder; the glorification of violence…

New Nitrogen Ice Cream Shop Opens

Molecular gastronomy’s contribution to summertime treats is instant ice cream, emerging, like magic, in a puff of smoke. Nitrogen gas, which liquefies at an extremely low temperature, can freeze ingredients, like cream, on contact, an effect that chefs like Heston Blumenthal, of the Fat Duck in England, have used to stunning effect. Some ice cream…