I've written enough about global warming on this site, that I have probably created in some of my readers a false notion. So let me disabuse it. I think it is wise that society pursue alternative energy sources. It won't do a dadgum thing about global warming, but it will clean up the air. And it will reduce a significant source of revenue for terrorists.
There are a lot of excellent alternative sources of energy besides coal and oil. Although known reserves of these two energy sources are sufficient for a long time, it's still good to reduce our dependence on them.
Hybrid Vehicles. I've just started looking into used hybrid vehicles. I'm not sure I trust a used hybrid, because they're still pretty expensive to maintain, but this will improve with time. This is the general inevitability with good ideas in a free market. Admittedly, my reasoning for wanting a hybrid is not primarily to clean up the air (that's secondary). It's cause I hate the prices at the gas pump! Toyota makes small (Prius), midsize (Camry), and SUV (Highlander). Interestingly, the Highlander hybrid is currently about $8,000 more expensive than the regular Highlander, as is the hybrid Camry as opposed to its neanderthal cousin. The price of the Prius is down about $6,000 from what it used to be, though! And you can get a federal tax deduction for buying a hybrid.
One of the dumbest things Ford and GM could have done is to not notice the market demand for hybrid vehicles. I have no stats, but my guess is that this is the major reason for their undoings.
Wind Energy. It's not completely reliable, but it's a start. It takes a boatload of wind turbines to provide much energy, and the best technology isn't made in the United States. What's funny is that a lot of otherwise "environmentally conscious" people say NIMBY, NIMBY, NIMBY when it comes to wind turbines in their area. The price of wind energy is bound to come down, in part in conjunction with more effective ways being discovered to harness its power.
Nuclear Energy. This is one of the greatest untapped sources of power that we aren't using. Finally, something good that we can take from France's example! A significant amount of France's power comes from nukyalur. The Three Mile Island incident scared a lot of people, and made insurance premiums for nuclear reactors to go sky high, but that was before we really knew much about how to regulate and control it.
Solar Energy. Solar energy is unreliable like wind, but that's not to say that we shouldn't use it. Some locales are providing for the ability of solar (and probably wind) power sources to feed their excesses back into the public power grid, which I think is a great idea. As the ability becomes available for homes and business to store more and more solar and wind power, these technologies will become more viable.
That's a good thing.
And I think that the improvements will most likely come about through market-driven initiatives.
That's a good thing to.