Could you correct my paragraph if it has some errors?

Nuclear energy said to be more eco-friendly than other major energies. For the last few decades, global warming has become a world environmental problem and governments, companies and other organizations is working on controls on carbon dioxide emissions all over the world. While such energies as thermal energy which utilize petroleum and coal emit amounts of carbon dioxide, nuclear energy does a little. Likewise, nuclear energy emit less amount of air pollutants than other major energies. Even better, there is no need to be anxious about wasting and draining resources of the earth because its energy resource is uranium.