A crowd of wildlife rangers gathered on a woody hillside in Nepal last year to try something they'd never done before. A man held what looked like an overgrown toy airplane in his right hand, arm cocked as if to throw it into the sky. As his fellow rangers cheered, he did just that. A propeller took over, sending it skyward.
The craft was an unmanned aerial vehicle, also known as a drone, though not the military kind. Its wingspan was about 7 feet, and it carried only a video camera that filmed the forest below.
The U.S. Supreme Court, on the brink of issuing two same-sex-marriage decisions, is facing a question that Margaret Marshall had to resolve for her state a decade ago, as chief justice of the Massachusetts Supreme Judicial Court. Her decision became the first to legalize same-sex marriage in the United States.