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This past month, I’ve discovered a groundbreaking method for turning ordinary foodstuffs into fuel. The potential is boundless, as practically any food item will do — pumpkin seeds, cereal, and salmon fillets can all transform into the energy required to get you almost anywhere you need to go, while emitting almost no extra greenhouse gases.

Here’s how it works: Eat food. Allow your digestive system convert it into glycogen, which provides energy to your muscles that can be used to power physical motion. Then walk.