Dan Nachtrab

Earthquakes, tsunamis, volcanic eruptions, and extreme weather. Has Earth always been this way? Featuring footage of top geologic hot spots on ...

Shark scientist Dr. Michael Heithaus embarks on a mission to reveal the mysterious connection between sharks and volcanoes.

It is the world’s largest coral reef, the largest living structure on the planet and one of the wonders of the natural world. The three ...

Shark expert Neil Hammerschlag and a crew of researchers search for an elusive hammerhead shark.

Imagine diving into the ocean only to discover that you are surrounded by one of the largest shark frenzies on the planet. Well, that is exactly ...