How can we produce the energy if coal, gas etc run out? What are the other forms of energy towards which we are working for?

Q.
How can we produce the energy if coal, gas etc run out? What are the other forms of energy towards which we are working for?

Name: Brijesh Tiwari

Age: Not Available

Institution: SABRS Vidalaya

City: Not Available

A.
Research is on various other sources. Sources like solar energy, bio-fuels and hydrogen energy.

By A.P.J.Abdul Kalam