Scientific American: Senate Majority Leader Harry Reid said yesterday that he would try to bring a global warming bill to the floor before the end of summer, another indication that both sides of Capitol Hill want to send major climate legislation to President Obama during his first year in office. “We have to take a whack at it,” the Nevada Democrat told the Associated Press in an interview, explaining that failure to act “would be neglectful.” Reid repeated his plans to take up a more limited …