Book excerpt: The earth's climate is getting hotter, and this warming affects habitats, food chains, and life cycles around the world. It also affects the habitat of every single animal on the planet. But the animals themselves can't stop the warming...who can? The answer is: PEOPLE CAN! Brenda Guiberson takes a unique look at global warming by focusing on how it affects animal environments and what kids can do to help. Earth is a 2011 NSTA Outstanding Science Trade Book.