The emissions from a scoop of ice cream—including everything from the cows to transportation and freezing the product—add up to roughly a quarter of a pound of carbon dioxide. Now if you buy ice cream from a Ben & Jerry’s store in London’s Soho neighborhood, the company will spend a penny to offset the carbon footprint of each scoop. The cashier will also ask if you’d like to donate an additional penny to make even more of an impact. A penny may not seem like a lot, but these micro-donations can go a long way in reducing emissions.