Satellite imagery reveals how man-made structures, like breakwaters, accumulate sediment and enhance beaches.
A tsunami warning has been issued for parts of California and Oregon, meaning residents are urged to move away from the coast or to high ground. The National Oceanic and Atmospheric Administration ...
LOS ANGELES - A tsunami generated by a powerful 8.7-magnitude earthquake near Russia's Kamchatka Peninsula reached the California coast early Wednesday, prompting urgent warnings from emergency ...