Science

Extreme heat roasts East Coast, as cold front moves into Midwest

People try and stay cool in the fountain in Washington Square Park during the start of heat wave across the U.S. on July 19.
People at Washington Square Park in New York City. Photo: Spencer Platt/Getty Images

People on the East Coast can expect the heat wave that's gripped much of the U.S. this weekend to end Monday and Tuesday, the National Weather Service said. But the cold front will bring "strong thunderstorms" and potentially heavy rain that may trigger flash flooding.

The state of play: The cold front was moving through the Midwest Sunday, as the East Coast sweltered through another day of searing temperatures, with several records broken or tied. The heat and humidity caused more power outages and the cancellation of events Sunday.

American pocket shark that glows in the dark confirmed as new species

A 5.5-inch long rare pocket shark found in the Gulf of Mexico has turned out to be a new species and one that squirts little glowing clouds into the ocean.
Photo: Mark Grace/National Oceanic Atmospheric Administration National Marine Fisheries Service Southeast Fisheries Science Center via AP

Researchers have uncovered a tiny new species of pocket shark in the Gulf of Mexico that glows in the dark, a Tulane University study reveals.

Details: The 5.5-inch creature has been named the American pocket shark, or Mollisquama mississippiensis. It secretes a glowing fluid from a tiny pocket gland near its front fins, the study says.