New York Times: Among the most striking elements of the catastrophe at Fukushima Daiichi nuclear reactors in Japan were the hydrogen explosions that destroyed the upper parts of some of the reactor buildings. The hydrogen was released by a metal called zirconium in the overheated core.
Since that accident, whose second anniversary falls on March 11, researchers have been looking at a variety of ways to prevent a repetition. At the Electric Power Research Institute, a nonprofit utility consortium, scientists think...