In 1960, an earthquake in Chile triggered a tidal wave ... some of which weigh 30 tons—several hundred feet inland. The ahu, the largest on Easter Island, was effectively destroyed.

Easter Island, Ahu Tongariki Courtesy of Flickr user Arian Zwegers. About 2,000 miles off the coast of South America sits the Chile-governed Easter Island. Just 14 miles long and 7 miles wide ...

Ahu Akivi is situated nine miles (15 kilometers) from the quarry. It has been estimated that the moai at this site were probably transported and erected after AD 1400. The replica moai was created ...

O'ahu's sandy beaches are at risk. New research has determined that 81% of O'ahu's coastline could experience erosion by 2100, with 40% of this loss happening by 2030. Importantly, these forecasts ...