Scientists just found sugar in space. Here's why that matters

Luigi Mangione, the man accused of killing UnitedHealthcare CEO Brian Thompson, pleaded guilty to federal charges in court on Friday, renewing public interest in the case, his alleged motive and what could happen next. Mangione is charged with stalking in his federal case, while separately facing a state murder charge in New York. Friday’s hearing comes less than a month before his scheduled court appearance in the state case. However, Mangione’s guilty plea could have significant implications for his state case due to New York’s double jeopardy law. Here’s what has happened in the...