"A call to eco-action based on the power of numbers . . . Young readers marching in step will meet Greta Thunberg and other iconic environmentalists and glimpse multiple ways of participating in the movement" - Kirkus Reviews Learn how a movement builds from one person to a billion in this A to Z environmental activism book. Readers count from 1 to 10 – and then in larger increments to a billion – as they learn new terms from “conservation” to “activism.” Inset boxes provide easy-to-understand definitions of additional new vocabulary words.

Illustrated by: Sarah Walsh