Where Does $100 to 350.org go (2021)?
350.org is a non-profit 501 (c) (3) founded in 2008 by a group of people along with author Bill McKibben, an environmentalist, to work towards ending the use of fossil fuels and build renewable energy.
Most scientists agree that the burning of fossil fuels is the largest contributor to greenhouse gas (followed by the animal agriculture industry) which has led to global warming. Named after the safe concentration of carbon dioxide in the atmosphere – 350 parts per million, 350.org is a grassroots organization that has become more well known as the public has become aware of the effects of climate change.
Based in Brooklyn, New York, 350.org raises about $20-25 million annually (primarily through contributions), spends about 80% of those funds, and has about $13 million in net fund assets. Because the organization is relatively young, it appears they have been focused on their mission but also building up their general fund. Hence, the reason they have not been spending as much as they raise. Read more 
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