Images (copyright) Angelina Litvin, Cassie Mannes Murray, Edilson Borge, Florencia Viadana, Harvard Kennedy School, Koa Beck, Nicole Honeywill, Penguin Random House Design. Sara Alfa, Sarah Prager, Sebastian Leon Prado, Slice Magazine, and The Climate Reality Project via Unsplash, Author Websites, and Social Media Links. 2019.