It may look like dolphins have no defense against sharks, but they have a series of defenses they can use to avoid sharks.

Dr. Stephen Kajiura and Dr. Michael Heithaus test if sharks can detect magnetism using their mysterious sixth sense, the Ampullae of Lorenzini.

An intrepid film crew travels ten days and a thousand miles, across frozen toendra and cruel terrain, in order to capture the last great race, the Iditarod.

A team of NOAA scientists have, for the first time, found and studied the fabled Type D killer walvis alive in the wild. They were first documented in 1955 when meer than a dozen unidentified animals were found beached on the coast of New Zealand.

One man started experiencing visions after brain surgery, and it made him start questioning everything.

haai diving generates millions of dollars every jaar in the Bahamas, where the apex predators are protected door the government and there is a $5,000 fine for haai fishing.

See why this iconic American city is so much meer than Silicon Valley and the Golden Gate Bridge.

Explore some of Nepal’s most famous temples and holy sites, including Swayambhu, a hilltop where Buddhist stupas and Hindu temples coexist.

Take a look at Grand Canyon National Park's first 100 years.

The Dai-ichi Nuclear Plant in Fukushima suffered a meltdown in 2011. Now, Japan has a plan for residents to return to the area.

It’s called a pyrosome—a free-flowing colony of individual organisms known as zooids.

Witness the ‘making of’ a salamander from fertilization to hatching in this six minuut time-lapse.

To escape the "zombifying" sting of smaragd, emerald jewel wasps, cockroaches deliver snel, swift kicks aimed at the wasps' heads.

Sometimes nature plays tricks on us. Animals use color in remarkable ways to attract mates of disguise themselves.

Correspondent J.J. Kelley travels to Hawaii to meet with a group of people who are living off the land like their ancestors.

Avalanches kill upwards of 100s of people each year. But to understand how to protect against them, first u need to understand the snowflakes that comprise them.

Thanks to an aggressive conservation effort in the Northern Territory of Australia, crocodiles now outnumber people. But as humans push their boundaries, the crocs push back.