A federal court in Boston has ruled that warrantless U.S. government searches of the phones and laptops of international travellers at airports and other U.S. ports of entry violate the Fourth Amendment.
Swedish teen climate activist Greta Thunberg hitched a renewable-energy ride back to Europe on Wednesday, sailing into the Atlantic on a trip she hopes will get her to Madrid in time for another climate conference, and then home for the holidays.
Japan's Hayabusa2 spacecraft departed from a distant asteroid on Wednesday, starting its yearlong journey home after successfully completing its mission to bring back soil samples and data that could provide clues to the origins of the solar system, the country's space agency said.
Ultima Thule, the farthest cosmic body ever visited by a spacecraft, has been officially renamed Arrokoth, or "sky" in the Native American Powhatan and Algonquian languages, following a significant backlash over the old name's Nazi connotations.
The breathtaking reds, yellows and purples of the Mesoamerican Reef have been turning sickly white, leading researchers on a desperate hunt to understand and fight the mysterious disease killing the Caribbean's corals.