They have their own garden of eden story, where earth was a paradise before it was spoiled by man. Each person born has an original sin - of breathing, and using resources. As religions go, it is an apocalyptic one: unless you convert, not only will you perish, but so will all of humanity. They have their sacred holiday in the spring, which is observed worldwide and promoted by all the media and government. To convert, you need to practice certain sacred rituals - the sorting of trash, the purchase of particular "blessed" "green" products. Indulgences are offered as well - one must buy carbon credits to offset the sin that is one's existence, in order to be "clean". They have their sacred texts; Earth in the Balance, Silent Spring, etc.