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Resources & Energy

In Use It, Lose It, spend oil freely for 5 years and watch the gauge drop — resources used up don't come back, and saving them stretches how many more years they'll last. In What Refills, build a town powered by solar, wind, and hydro to keep power at 15 or above even at night — solar stops when the sun sets and wind stops when there's no wind, so you learn firsthand why mixing several sources matters. In Use Less, change lighting, fridge, and AC habits one at a time to cut monthly electricity use from 500 kWh down to 220 kWh. The answer is both: save the resources that don't come back, and mix the ones that do.