00:00Imagine a 1,000-foot wall of water racing toward the U.S. coast.
00:04Sounds like science fiction, right?
00:06But scientists say, it's happened before.
00:09In 1958, a mega-tsunami struck Alaska's Lituya Bay with a wave over 1,700 feet high.
00:16It shredded trees, reshaped the land, and it could happen again.
00:20Experts now warn that under rare but real conditions, the U.S. could face a similar disaster.
00:25Geophysicists are tracking seismic activity in unexpected places.
00:30Even small earthquakes or underwater landslides might trigger waves of terrifying height.
00:35The Cascadia subduction zone, stretching from California to Canada, is under intense watch.
00:41A major quake there could drop the land by several feet in minutes, creating the perfect storm for a mega-tsunami.
00:47It's not just a coastal threat. Roads, farms, and inland towns could be wiped out, too.
00:53These events are rare but real.
00:54The best defense, awareness, preparation, and staying alert before the wave ever comes.
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