@spendius,
Well, Spendi, I do not share your opinion that it is hopeless.
I think that with only a little research you will find that there is an abundance of suggestions for solutions. Technology is the answer, not "policies".
But technology can never truly aid humanity as a whole before it is freed from greed motivated application and restriction. As long as someone has an economic interest in limited energy supply, they will naturally resist any effort of obtaining free energy in abundance.
The technology to harvest wind, sun, waves thermal energy from the earth and many other things already exists. But since oil companies pretty much own and rule the world, all things that will diminish their profit and power encounter heavy resistance.
I believe we have the technology, and through technology the resources, to provide everyone on the planet with everything they need without the need for anyone to go bankrupt over it.