Rare roll cloud phenomenon advances over the ocean like a giant wave, captivating onlookers and spreading rapidly online.

The dinosaur-killing asteroid that slammed into Earth 66 million years ago also triggered a jumbo-size tsunami with mile-high waves in the Gulf of Mexico whose waters traveled halfway around the ...

A massive landslide triggered by climate change unleashed a 650-foot “mega-tsunami” that caused Earth to vibrate for nine days. The seismic event in a remote part of Greenland last September ...

It resembles a giant wave rolling across the sky. Read more at straitstimes.com. Read more at straitstimes.com.

The underwater volcano near Tonga in the South Pacific sparked tsunami waves and a seaside spectacle Saturday on the California coast — nearly 6,000 miles away. “Hello world, we are surviving ...

• Tsunami waves can be very long (as much as 60 miles, or 100 kilometers) ... The enormous energy of a tsunami can lift giant boulders, flip vehicles, and demolish houses.

Tsunami death toll in Indonesia crosses 400; officials warn that second giant sea wave is possible . The tsunami was preceded by a potent volcanic blast that may have triggered it.

Evidence of the Storegga tsunami has been found in Norway, England, Denmark, Greenland, and Scotland, including the Shetland Islands. Around the mainland of the UK, waves may have reached 10 to 20 ...

The shifting tectonic plates and tsunami of 3,800 years ago drove waves 15 to 20 meters (50 to 65 feet) above sea level in parts of Antofagasta, Atacama, and Tarapaca, on the coast north of Santiago.