Deadly Oklahoma Tornado Widest on Record, Rare EF5

The deadly tornado that struck near Oklahoma City at the end of May had a record-breaking width of 2.6 miles and was the second top-of-the-scale EF5 twister to hit the area in less than two weeks, ...

Russia Sets Back UN Global Warming Talks 6 Months

The United Nations global warming talks have been set back by six months after Russia and its allies blocked progress at a group charged with implementing decisions of the 190 nations involved in the ...

Obama Orders Patent Changes to Combat Abuses

President Barack Obama announced a series of actions aimed at protecting technology, finance and retail companies from lawsuits and demands for fees by businesses that abuse the patent system. The ...