Study links petrochemical plants in Louisiana to premature and low-weight births

News Wrap: Biden calls for higher tariffs on Chinese metal products

Columbia University president faces House committee investigating antisemitism on campus

By Laura Barrón-López, Shoshana Dubnow, Karina Cuevas

Boeing whistleblowers testify about company’s safety issues and design errors

By Miles O'Brien, Courtney Norris

NewsHour viewers remember Robert MacNeil

By Steff Staples, Dan Cooney

NBA bans Jontay Porter after gambling probe shows he shared information, bet on games

By Tim Reynolds, Associated Press