I want to give a huge thank-you to everyone who helped me with the research, writing, and creation of this book. Your support means the world to me!

First, I want to thank my extraordinary editor empress, Kaitlin Ketchum! Her belief in this project and her passion for publishing educational books makes my work possible. Thank you so much for all of your insight, support, and amazing edits!

A huge shout-out to the rest of my Ten Speed team and their incredible skills. A big thank-you to my always posh and on point publicity and marketing team—Daniel Wikey and Erin Welke—for getting these books out there! Thank you to Kristi Hein for copyediting and spell checking! My books look as good as they do thanks to the production wizardry of Jane Chinn and talented typesetting stylings of my designer, Lizzie Allen.

Thank you to my agent, Monica Odom, for always having my back and being the all-time lady boss, helping me make all my book fantasies become reality.

A special thank-you to Eva Gurria, Martin Sommerschuh, and Natabara Rollosson for meeting with me at the United Nations and sharing their work and stories from the Equator Initiative with me.

Thank you to my dear friend, Aditya Voleti, for help fact checking and midnight walk-and-talks. A huge I love you to my husband, Thomas Mason IV. His help with fact checking, feeding me, and being my ultimate cheerleader has helped to make this book and my life wonderful. And one last huge thank-you to my family for all their Ignotofsky love and encouragement.