A few months ago, while we were talking about climate change, one of my children asked: “”If there’s one thing that I could invent that would help, what would it be?” We decided to devote an issue of Wired to this question, and it’s just out now—with essays on battery technology, rice farms, urban design, wind power, and much, much more. The key message: with the right science and tech, we can solve this problem.”

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