Here’s why without fossil fuels our economy would be in a permanent deep freeze. : The Biden administration wants to phase out fossil fuels. This segment of What’s Ahead explains why, given the current state of technology, such a policy is utterly and destructively impractical. The arctic weather hammering parts of the country should be a cold slap of reality. Eighty per cent of our energy comes from natural gas, oil and coal. We need all of our current energy sources. Here’s one example why a no-fossil-fuel approach is absolutely unrealistic.