Big thanks to Jodi Reamer and all the Writers House crew, Bethany Strout, Maja Nikolic, and Elena Santogade. Thanks to David Levithan and everyone at Scholastic. Also special thanks to my mom, who read a final draft; my sister Penny, who read early drafts; and especially Sally Cohen, who put the “On Nature” section up on her refrigerator when it looked like the book might never make it to print. Every time I saw “On Nature” on Sally’s fridge, I thought, I gotta finish that book…