“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 ReviewsIt starts with one small step, one small action, And grows... and grows... To BILLLIONS fighting for BIG changes 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 "convervation" to "activism" and discover ways they can take action to protect the planet. A counting and A to Z book Boxes on each page provide easy—to—understand definitions of additional new vocabulary words Endnotes go into more detail about the activist featured in the book and ways readers can help make a difference towards climate change