Blue marlins are among the largest, fastest, and most recognizable fish in the world. Their cobalt blue and silvery white bodies and spear-shaped upper jaws make this big fish stand out in a big ocean ...

These frogs are considered one of Earth's most toxic, or poisonous, species. With a range of bright colors—yellows, oranges, reds, greens, blues—poison dart frogs aren't just big show-offs either.

Canada geese usually graze together in fields, eating grasses, sedges, grains, and berries. Their bills have serrated edges, which helps them cut tough grass stems. In addition to grasses, sedges, ...

A long-held fascination with North Korea eventually led Marcel Theroux to travel to the most secretive country on Earth, ...

A bald eagle's white head may make it look bald. But actually the name comes from an old English word, "balde," meaning white. These graceful birds have been the national symbol of the United States ...

Not far from the North Pole, the world is frozen for thousands of miles. Suddenly a snowy mound wiggles and reveals two dark eyes. The lump is transformed into the furry white body of a lone arctic ...

A luna moth perches on a leaf, its bright green wings folded over its body. Suddenly the insect spreads its wings to reveal their great size. This moth's wingspan can stretch four and a half ...

Tasmanian devils are the largest carnivorous (meat-eating) marsupials in the world. Tasmanian devils live in Tasmania, a large island just south of Australia. In fact, Tasmania is the only place where ...

The fall foliage season is short but sweet, with just a few weeks each year offering travellers the chance to spot the ...

Could the aviator's lost Lockheed Electra be submerged on a tropical island? A group of adventurers is about to find out.

Birds like the warm weather in Los Angeles just as much as humans. Author and birding expert Noah Strycker shares the best ...

An outbreak in fur seals in South Africa is the first documented case of it spreading among marine mammals. Two Cape fur ...