With their father jailed for sinking a river boat, Noah Underwood and his younger sister, Abbey, must gather evidence that the owner of this floating casino is emptying his bilge tanks into the protected waters around their Florida Keys home.

When Judy Moody gets serious about protecting the environment, her little brother Stink thinks she is overdoing it, but she manages to inspire her third grade class to undertake an award-winning, environment-saving project.

"When Mary Kate Murphy joins a special science pilot program focused on climate change, the class opens her eyes to lots of things she never noticed before about her small suburban town- Kids waste tons of food at school without a second thought. Parents leave their cars running in the pick-up lane all the time. People buy lots of clothes they don't really need. Some of her friends who live in the city and are bused to her school don't always feel...

When he has a dream about a future Earth devastated by pollution, Walter begins to understand the importance of taking care of the environment.

"The Laskarises' relocation to Wilford Island, Florida, is a big key change for Mimi ... Then her science teacher, Ms. Miller, shows her class a TED Talk by Melati and Isabel Wijsen. At ages twelve and ten, they lobbied to ban single-use plastic bags on their home island of Bali--and won. Their story strikes a chord for Mimi. She's twelve. Could a kid like her make such a big change in a place that she's not yet sure feels like home?"--

With a letter to President Franklin Roosevelt and unexpected help from her Hallelujah-spouting cousin, Henry James, Elsie Mae tries to prevent a company from building a canal through the Okefenokee Swamp.

With help from her Grandma Barb, Marty builds a habitat for worms in her school cafeteria as part of the Save the Earth Project.

When his family moves from Tucson, Arizona to Massachusetts, fifth-grader Ben has a hard time leaving the desert he loves, but when he finds a kindred spirit in his science teacher and ends up trying to help her with some of her problems, he finally begins to feel at home.

When Nancy, the girl who loves to use fancy words, learns about Earth Day and "being green," her enthusiasm causes problems at home.

After discovering that a green sea turtle was harmed by plastic in the ocean, twin mice Sydney and Simon come up with a creative campaign to increase recycling and reduce the amount of trash created in their home, school, and town.