Air pollution, deforestation, greenhouse gases, plastic everywhere—these things put us, and our home planet of Earth, at risk. But there's hope. STEM to the rescue! Scientists, inventors, and world leaders have been working to think of ways to turn our planet green again—and plants may be the answer. Learn about all the ways plants have helped us in the past, and how they play a part in our future. Readers get an up-close look at what the most brilliant minds in science are doing. And an activity and discussion questions challenge students to think into the future themselves.