Non-renewable energy sources cannot be replaced in our lifetime, or that of our children or even our children’s children.  Once these energy sources have been used up that’s it, they are gone forever.  There is a real danger we could run out of these supplies before alternative energy sources are available.

Planet Earth has useful but finite resources.  Green living means using Earth’s nonrenewable resources as sparingly as possible.  Fossil fuels, the energy-rich organic substances traced back to the remains of organisms that lived 300 to 400 million years ago, took a long time to create, and humans are using them up far faster than the earth can produce them.

Stock Check: The Earth's Non-Renewable Resources

Source: Mateusz Wanat