There are species of undomesticated animals that retain some or all of their wildness while performing tasks that benefit humans.

There are many unlikely animals that are able to endure or adapt to harsh environments. Here are some of the greatest of these survivor species.

Though the islands on this list are not as well known as the world's biggest and most scenic isles, they have plenty of characteristics that make them among the world's most unique islands.

These natural places feel like they belong far away from city life, yet they are surprisingly near some of the world's greatest cities.

There are many eco-friendly ways to approach pest control whether the problem is slugs on your patio or a snake in the pool, no need to rely on harsh chemicals.

Some of these species fall into the realm of strange animals, while others are extraordinarily colorful or seemingly out of place in a freshwater aquarium.

pet birds, farm animals, and even aquarium fish have been able to thrive in the wild in certain situations. Here are some examples of domestic species that have unexpectedly made a life for themselves outside the cage.

A look at 15 of the world's largest organisms, from whales to bears and elephants; even trees are included.

A look at some of nature's most intelligent, social, and organized animals - ones that might seem more human than human in some ways.

A look at the microsocieties of ants and termites, and how they react to one another.

Films like Madagascar tell exciting stories of animals escaping from their captors, yet the characters' real-life counterparts still sit behind bars -- except these lucky few.

Landfills don't have to remain steaming heaps of smelly rubbish. Take these ten former trash heaps that are now characterized by abundant green and diverse wildlife.

Everyone now knows that processed and fast foods are not the bastions of nutrition, but that shouldn't make these ingredients found inside them any less revolting.

Activists battle to stop the senseless killing, neglect, torture and abuse of animals through creative and disturbing ad campaigns.

Some of the most shocking and disturbing ads in recent years have come from talented creative design teams of environmental and activist organizations.