What are two ways you can use less energy in your home?

What are two ways that energy can be conserved?

Why is it especially important to not waste energy from fossil fuels?

Why are trains much more efficient than trucks for transporting items? Why are boats more efficient than airplanes or cars for travel?

When you consume less power, you reduce the amount of toxic fumes released ... more fuel to create more energy, the extra carbon waste traps too much heat ... household traded in just one incandescent light bulb for an efficient CFL, the ... As fossil fuels become increasingly scarce, they will become extremely expensive.