The threat of a fission explosion at the Fukushima power facility emerged today when the roof of the number three reactor exploded and fears that a spent fuel pool, located over the reactor, has been compromised. The pool, designed to allow reactor fuel to cool off for several years, was constructed on top of the…

For most Venezuelans, the El Nino-linked drought that has struck the country this year means inconveniences like power and water rationing. But for some, the extreme dry spell is stirring up bittersweet memories. The Uribante reservoir that feeds a hydroelectric dam here is at its lowest level in decades, and the receding waters have uncovered…