A Nobel Prize-winning scientist who supported President Barack Obama has said that he does not believe global warming is a problem, and has openly criticized the president for his position on the issue. "I would say that basically global warming is a non-problem," Dr. Ivar Giaever announced during a speech at the 65th Nobel Laureate Conference in Lindau, Germany, last week, according to Climate Depot. Quoting Obama's warning that "no challenge poses a greater threat to future generations than climate change," Giaever said it was a "ridiculous statement." "I say this to Obama: Excuse me, Mr. President, but you're wrong....