A new study in PLOS Biology finds that bumblebees can learn to solve puzzles from each other — suggesting that even invertebrate animals may have a capacity for culture.

"We are putting out a clear call to all of our shops: Do not allow people to enter the store without taking off their face mask," the mayor said. A flurry of questions ensued.

Firefighters are carrying victims out of the wreckage on stretchers. Officials are investigating the cause of the blast. Two other recent explosions were blamed on gas leaks.

The Biden administration sued on Tuesday to block the $3.8 billion purchase, saying the deal would reduce competition and drive up air fares for consumers.