註釋
Climate change can be a difficult discussion to have with children without overwhelming or scaring them. "I Wonder Why There's a Hole in the Sky" takes a look at our planet, how we are damaging it, and what we can do to protect it, all with an accessible and child-friendly approach, appropriate questions, and lighthearted illustrations. It addresses all of the important topics such as pollution, global warming, endangered animals, climate change, and extreme weather in a gentle Q& A style that invites further discussion. It is the perfect introduction to "green" issues for young environmentalists.