For the last eight years, Nicolas and Rachel Sarah have been slowly weaning themselves off fossil fuels. They don’t own a refrigerator or a car; their year-old baby and four-year-old toddler play by candlelight rather than electricity at night. They identify as Christian anarchists, and have given an official name to their search for an alternative to consumption-heavy American life: the Downstream Project, with the motto to “do unto those downstream as you would have those upstream do unto you.”