New York Times: After three decades without starting a single new plant, the American nuclear power industry is getting ready to build again. When the industry first said several years ago that it would resume plant construction, deep skepticism greeted the claim. Not since 1973 had anybody actually built a nuclear plant in the United States, and the obstacles to a new generation of plants seemed daunting. But now, according to the Nuclear Regulatory Commission, 21 companies say they will seek …