To feed the 9 billion humans who'll be living on Earth in 35 years, we're going to have to double the amount of food avail-able. That would be a challenge even if those same humans weren't changing the planet's climate, making it less friendly to farming. But agriculture's inefficiencies, misuse of fertilizer, and inappropriate crop choices are actually easy to fix. Feeding the world of tomorrow is technologically feasible with existing tools (and some creative thinking). It'll just take some work.
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