When is a sea wall a good idea?

Recent hurricanes like Maria and Sandy have brought crippling winds, torrential rains, and flooding to vulnerable coastal regions, in some cases killing thousands of people. Sea walls and other barriers are often suggested ...

NASA sees Typhoon Saola's huge reach over the Philippines

Typhoon Saola looks like a monster tropical cyclone in infrared imagery from NASA's Aqua satellite today, July 30. Although Saola's center is over 300 nautical miles (368 miles/592 km) south-southeast of Taiwan, it stretches ...

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