Crews are switching to a "salvage and recovery" effort at the scene of the Francis Scott Key Bridge collapse at the mouth of the Baltimore harbor. That will involve removing the wreckage of the bridge and the huge cargo ship that struck it so that the harbor can eventually reopen. Crews have recovered the bodies of two construction workers from the water and four others remain missing and are presumed dead.    There's a major fundraiser for President Biden tonight at Radio City Music Hall in New York City. Biden will be joined by former Presidents Bill Clinton and Barack Obama with many celebrities joining them on stage like Queen Latifah. Talk show host Stephen Colbert will be the evening's moderator.    Connecticut Governor Ned Lamont is directing all flags to fly at half-staff Friday in honor of former U.S. Senator Joe Lieberman. The political giant of Connecticut died Wednesday in New York City following complications from a fall. Lieberman served the U.S. Senate for more than two decades and was the Democratic nominee for vice president in 2000 under Al Gore.    A State Department official is stepping down to protest U.S. support of Israel. On Wednesday, Annelle Sheline announced her resignation from her position with the Bureau of Democracy, Human Rights and Labor. She said she could no longer work for the administration as it enabled Israeli atrocities in Gaza.    The Sweet 16 of the NCAA Men's tournament is here. Four games tip off from Boston and Los Angeles on Thursday starting with number two Arizona against sixth-seeded Clemson. The winners will advance to the Elite Eight, which takes place on Saturday and Sunday.    Garbage piling up in landfills is emitting planet-warming gas at rates higher than experts thought. That's according to a study published in the journal Science. Scientists say this research was the largest measurement-based survey of American landfills. While landfills aren't known for their methane output, they do have a large impact at about 20-percent of global human-caused emissions, according to CNN.