Didi of China Moves to Delist From New York Stock Exchange

Didi Chuxing, the Chinese Uber-like ride-hailing champion and once considered the world’s most successful start-up, said Friday that it would begin delisting its New York-traded shares and prepare for a public offering in Hong Kong. The move is sure to reverberate outside

Omicron Is Here. Should You Cancel Your Trip?

David Freedman, the president-elect of the American Society of Tropical Medicine and Hygiene, said that the type of mask one wears while traveling is particularly important. Dr. Freedman discourages people from wearing cloth or homemade masks; N95 or KN95 masks are preferable,