He IS a frog in the well. Please Mr. Bharath Kumar, in millions of years of its existance, human being started using the fossil fuels, automobiles, industries, air-conditioning in last century. The amount of energy produced, gases emitted by human activities in last 20-30 years is more than what it did in the millions of years before.
Please have the sense to understand that the population has increased and and our concemption has increase. The earth is not of unmimited size as you would be imagining. Unless we start taking acre of the world we live in, our future generations will suffer.