Bears are powerful, majestic animals who were once nearly wiped out, but are now reclaiming their wild homes.

Depending on pack ice for their habitat, polar bears are threatened by climate change—and by traffic in their fur and parts.

A symbol of beauty transformed from humble beginnings, butterflies are one of the few insects who garner near universal appreciation.

Tigers are the largest cat species, with striped coat patterns as unique as fingerprints.