By Chris Francescani (Reuters) - A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died. By 9:30 p.m. Central Standard Time, more than two dozen tornadoes had been spotted in parts of Iowa, Oklahoma, Kansas and Illinois, according to the National Oceanic and Atmospheric Administration and local news reports. ...

By Tom Polansek and Mark Weinraub SHERIDAN, Illinois (Reuters) - With the U.S. spring planting season off to a historically slow start, an increasing number of farmers are counting on powerful tools to catch up: Monster machines that sow 36 rows of corn at once and feature high-tech innovations like computer-guided directional equipment. The technological wizardry from companies like Deere & Co and AGCO Corp is pitted in a frantic race against time, with farmers scrambling to get seeds in the ground because a slow start depresses yields and reduces the size of their harvest. ...

By Nichola Groom LOS ANGELES (Reuters) - In October 2004, then California Governor Arnold Schwarzenegger rolled up to a pioneering fueling station at Los Angeles International Airport in a hydrogen-powered metallic blue Hummer loaned to him by General Motors Corp. The "California Hydrogen Highway," Schwarzenegger's vision to ensure that every Californian would have access to a hydrogen fueling station by the end of 2010, called for the state to spend more than $50 million to help deploy up to 100 hydrogen fuel stations that would serve 2,000 fuel cell vehicles. ...