German climate researcher Klaus Hasselmann said on Tuesday he was taken completely by surprise by his Nobel Prize in Physics. It is fantastic to receive the Nobel Prize, the 89-year-old told Swedish news agency TT after learning of his award. “I’m still trying to grasp it,” Hasselmann was quoted as saying. He said he did not yet know how he would celebrate. “First I have to catch my breath and see what happens,” he said, according to TT.