New York (CNN Business) Apple CEO Tim Cook says his generation failed on climate change.

"We spent too much time debating," Cook told Tulane University graduates during a commencement speech in New Orleans on Saturday. "We've been too focused on the fight and not focused enough on progress — and you don't need to look far to find an example of that failure."

During his 15-minute speech, Cook, 58, called on the students to do better for humanity and to ignore the political noise around the climate change issue in order to make a real difference.

"This problem doesn't get any easier based on whose side wins or loses an election," he said, adding that people should stop and think about why some deny climate science. "It's about who has won life's lottery and has the luxury of ignoring this issue and who stands to lose everything."

He pointed out that the livelihoods of local farmers and fisherman depend on a healthy ecosystem. Meanwhile, catastrophic natural disasters like Hurricane Katrina , which devastated New Orleans in 2005, are becoming more common.

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