A tsunami that struck an Alaskan fjord in 2025 sloshed higher than the height of the top floor of One World Trade Center in New York, new research shows. The study, published May 6 in the journal Science , found that the tsunami reached 1,578 feet (481 meters) up the slopes of the fjord, making it one of the tallest tsunamis ever recorded. It would have easily washed over the roof of New York's One World Trade Center, which stands 1,368 feet (417 m), not including its spire. The tsunami hit Tracy Arm fjord, south of Juneau, on Aug. 10, 2025, when a massive landslide dropped 2.1 billion cubic feet (60 million cubic meters) of rock into the fjord's waters. The fjord is the outlet for the South Sawyer Glacier, which had been on a rapid retreat. It's not clear whether that retreat destabilized the slope or whether recent rains were more to blame, but the resulting tsunami was one of the largest on record.…