Why are we looking at alternative sources of energy ?

Explanation

We are looking at alternative sources of energy because the growing demand for energy was largely met by the fossil fuels. Our technologles were also developed for using fossil fuels ie., coal and petroleum. The fossil fuels are non-renewable source of energy. These fuels were formed over millions of years ago and there are only limited reserves. If we are to continue consuming these sources at such alarming rate, we would soon run out energy. To overcome this, alternative sources of energy are explored.