Aaron Wallin says it’s ironic that he’s so passionate about climate change given his career as a jet-fuel driver. But he says the job has given him perspective. “You kind of get to see the amount of fuel that I deliver… it’s a real, real thing,” said Wallin, who lives in Hampton. “Most people put a hose in their car and you never see the fuel.” Going solar is a big investment, and some people in Wallin’s life said he would be better off putting that money into the stock market. “That wasn’t the