Magnetic Induction CooktopsThe magnetic induction cooktop is the rising star of energy-efficient kitchen appliances. Typical electric or gas stoves heat the air under the pan, but a magnetic induction cooktop's heat is transferred directly to the pan through high-tech magnetism, leading to little wasted heat. Heat is generated quickly and is infinitely adjustable, just like gas. And because the heat needs a metallic surface for conduction, it's cool to the touch, making for a safer kitchen. Just make sure you have the right cookware to conduct the heat.Money- and energy-saving tips:Put a lid on it. Cover pots and pans to keep heat in and cook your food faster.Be passive with your pasta. Kate Heyhoe, author of Cooking Green: Reducing Your Carbon Footprint in the Kitchen, teaches us that we don't need to boil pasta for the full cooking time. Instead boil it for two minutes, then turn the burner off, cover the pot with a lid and let the pasta sit in the water for the remaining recommended cooking time. Your pasta will be cooked in the same amount of time and will have used less energy.