World leaders have warned that a “crisis mindset” is needed to tackle the existential threats facing humanity following the 2023 Doomsday Clock announcement.

University of Iowa and state environmental groups say that 2020 and beyond must be a decade of action before Iowa’s climate-change clock runs out. A public art piece in Manhattan, New York, echoes ...

A new pitch clock rule in Major League Baseball will speed up the action on the field. 2023 will be the first season for the new rules.