By studying where rewilding has worked well around the world, we've worked out the dos and don'ts.
One-fifth of Earth's land could be restored to wilderness by reintroducing animals and improving management.
Researchers strapped tracking devices to 20 powerful owls in Melbourne and learned these apex predators are increasingly choosing to sleep in urban areas, from backyard trees to golf courses.
New research suggests that residential gardens are the source of 85% of the nectar produced in towns and cities.
Conservationists have found a shortcut in the race to save Earth's threatened species.
Emperor penguins have a few hidden tricks to stay warm, like blood vessels in the nose arranged so they can regain most of the heat that would be lost by breathing.
New research has found that different types of habitat loss can change the stability of whole plant and animal communities.
Shaded valleys and other cool habitats could help save threatened plants and animals from extinction.