Selina Wang reports on former President Joe Biden's prostate cancer diagnosis days after his office says he recently began experiencing symptoms; Medical correspondent Dr. Darien Sutton on what a Gleason score of 9 and a metastasis to the bone means at this stage of life; Rhiannon Ally has the latest on a Mexican navy tall ship that slammed into the Brooklyn Bridge killing at least two people and left nearly 2 dozen others injured; Jaclyn Lee reports on the suspect who police say is behind an explosion at a fertility clinic in Palms Springs California, what officials are saying about a motive; and more on tonight's broadcast of World News Tonight.

Jon Karl has the latest on former Pres. Biden's health after a spokesman revealed Biden last got a PSA test for prostate cancer in 2014; Martha Raddatz has details on Pres. Trump unveiling plans for a massive missile shield defense system called the "Golden Dome," using interceptor technology on the ground and in space, which could cost more than $175 billion; as Israel expands its assault in Gaza, Ian Pannell has the latest on the United Nations' warning that 14,000 babies will die in the next 48 hours if aid doesn't reach them now; and more on tonight's broadcast of World News Tonight with David Muir.