I wouldn't mind a rational, reasonable conversation on the topic, but instead you've got "the world is ending we must DO SOMETHING" screamers...
Allow me to take a leaf from your book and say: Citation needed...
How exactly does the scientific community state that the world will end? Do they say that it will explode, like Krypton? Do they say that the oceans will boil away? If there is one thing that you can say about scientist it's that they always show their workings, so it should be easy for you to give an example of some paper that describes how the world is supposed to end.
But we both know that nobody has said that the world will actually end.
Replacing incandescent light bulbs with LED bulbs seems to be a very cost effective way to reduce our power consumption.
Yet all we hear about are electric cars and solar power, neither of which make any economic sense.
Are you seriously saying that you have heard nothing about replacing incandescent light bulbs with LED bulbs? Seriously? That conversation has already been had. Go out and buy a light globe and tell us what choice you have now? Why would we still be hearing about that now when that is the one thing that has already been fixed?
And why should economic sense be of highest importance? Slavery makes economic sense, and yet we pay more for our goods so that the people who make them get paid because it is the right thing to do. Why can't we do the same thing so that we don't stuff up the environment?