A new "Great Wall" runs along 60% of mainland China's coastlines. But the push to gain more land for economic development could put the country’s coastal wetlands and the services they provide at risk, researchers say.

Luis Echegoyen has held influential positions at major universities and the National Science Foundation, published extensively, and won national and international recognition for his work. But in a career that spans nearly 40 years, there has been one surprisingly consistent theme: serendipity.

NASA’s Swift satellite has captured an event in the cosmos like nothing ever seen before, researchers say in the 17 June issue of Science. A high-energy gamma-ray burst known as Sw1644+57, located at the center of a small, star-forming galaxy, is burning much longer and much brighter than astronomers had expected it to—and two separate teams of researchers are trying to figure out why.