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Suffering backlash over environmental stance, Lewis Hamilton defends lifestyle

(CNN)Lewis Hamilton has defended his interest in raising awareness about environmental issues, insisting his Mercedes team is working to become "carbon neutral.""It's not the easiest because yes, we are traveling around the world," Hamilton, who is a vegan, told reporters ahead of the Mexican Grand Prix."We are racing Formula One cars. Our carbon footprint, for sure, is higher than the average home owner who lives in the same city. "But that doesn't mean you should be afraid to speak out about things that can be for a positive change."READ: How veganism helped the F1 world champion to gloryIn a series of messages posted on his Instagram account on October 15, Hamilton labeled the world a "mess" and wrote that he felt like "giving up on eve ...