One way of trying to answer that is by looking at what’s common to most religions.
1. God? Yes, he (or she, or it) is usually present. In some form or the other. From an invisible energy field to visible objects like the sun, to animals, to humans, to super-humans with extra heads and hands.
2. A priestly class. Who somehow possess inside information on the aforementioned god. And who communicate god’s wishes. And one can only becomes a member of this priestly class when the existing priests allow you in.
3. Fear. If one doesn’t adhere to the practices imposed by the priests, you will go to some hell. No one knows where this hell is, but it’s a bad place to be in. Hell could also take another form, like being reincarnated as a lizard.
4. Sacrifice. If people did exactly what they anyway do, then there’s no point having the religion, right? So, one has to behave in a certain way to adhere to the religion. And this way has to have unnatural elements (things you wouldn’t do otherwise). Usually it’s some sort of sacrifice. No pork, no beef, no alcohol, no smokes, no prawns, no music, no dance, no work, whatever.
5. Faith. Now there is no real proof that god & hell exist. (Priests however do exist and can be identified by their costumes). But one is supposed to believe all this on faith. Reason & religion usually do not go together. But faith is not defined as an absence of reason. It is glorified as something vaguely “beyond” reason.
6. Guilt. Once a person starts believing that he/she has faith in god, and will therefore listen to the priests, guilt is inevitable. Because the only way to display this faith is by doing things that you otherwise do not do (or by not doing things that you want to do). So sooner or later, you end up doing something wrong. And because your faith tells you that it is wrong, guilt happens.
7. Signs. People’s credulity can only go so far. So once in a while, the priests have to point out evidence that the religion is right and god does exist. This is usually done with a strong confirmatory bias. So a cute butterfly somehow proves that god exists. And a swarm of locusts proves that god is angry.
8. Outsiders. Every religion tries to divide the world into believers and non-believers. Anybody who questions the religion (or even just ignores it) is branded a heretic. Usually, the fact that these people are anyway going to hell is not considered enough punishment, so they are ostracized or even killed immediately. Once something is accepted as a religion, the burden of proof shifts to those questioning it. The priests don't have to prove the existence of god. The deniers have to prove god's non-existence. Which of course, is pretty impossible.
9. Money. And of course, the religion has to be kept going. So while money is usually seen as the root of all evil, religions somehow can’t seem to get enough of it.
Okay, now let’s look at all this climate change stuff.
The god is nature. Instead of being part of it, we are somehow seen as an external infuence on it.
The priestly class is a bunch of scientists who cannot tell us what the the weather will be next week, but who have sophisticated models that project climate patterns for centuries.
These models make us fear a hell that is at least 100 years away (basically none of us are going to be alive to see if it happens or not). So we have to take this on faith.
The priests demand that we sacrifice various things and modify our lifestyles to leave a smaller carbon footprint.
Because just about anything we do, including breathing, increases our carbon footprint, those who have the faith can’t help feeling some guilt.
As 100 years is a long way away, the priests need to show some signs of global warming. (Incidentally, global cooling was the big fear in the 1970s). This is a bit difficult in our seasonal, cyclical world, so they hit upon the concept of “climate change”. They said that average temperature would go up but so would the variations. So, effectively, everything became evidence. Hot summers – climate change. Cold summers – climate change. Hurricanes – climate change. Unless the earth’s temperature is absolutely constant, year after year, it is taken as evidence of climate change. So we have our signs.
Anybody who questions anthropogenic climate change is seen as a heretic and is abused. Like the British PM, who recently compared the skeptics heretics to “flat-world believers”. (Conveniently forgetting that the consensus used to be “flat world”. The round-earth folks were the skeptics those days.) Outsiders are classified as irresponsible retards.
And of course there is money involved. Trillions of it. Which perhaps, is the point of it all.
So no problem. Go ahead. Follow the religion. Follow any religion you want. But do stop referring to climate change as "science". And please don’t make laws based on your religion that affect me. Aren’t we supposed to be a secular society?
PS : Whatever I said, Michael Crichton said better - http://www.michaelcrichton.net/speech-alienscauseglobalwarming.html
PPS : @Palsule pointed me from his blog to a speech, again by Michael Crichton, titled Environmentalism as Religion. Do check it out.