The Living Planet Report documents the state of the planet—including biodiversity, ecosystems, and demand on natural resources—and what it means for humans and wildlife. Published by WWF every two years, the report brings together a variety of research to provide a comprehensive view of the health of the earth.

What's the status of some animal populations?

Populations of vertebrate animals—such as mammals, birds, and fish—have declined by 58% between 1970 and 2012. And we’re seeing the largest drop in freshwater species: on average, there’s been a whopping 81% decline in that time period.