From the world’s biggest land animal to a creature built more like a tank than a sub, meet seven mammals that you might not think can swim well, but do!

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In this video Paul Andersen explains how the energy of a wave if directly related to the amplitude of a wave. The wave energy of a sound wave is the volume of the wave.

The immense swell of a tsunami can grow up to 100 feet, hitting speeds over 500 mph -- a treacherous combination for anyone or anything in its path. Alex Gendler details the causes of these towering terrors and explains how scientists...

Hoboro Island off the coast of Japan may soon be an island of the past, and it’s primarily due to one unsuspecting isopod.

Plastic is a huge problem in the oceans, but engineers and research groups are working on how to deal with it. Hank describes some of the leading proposed solutions.

For thousands of years, people made both functional maps and what are known as cosmographies, illustrating the earth and its position in the cosmos, often including constellations, gods, and mythic locations. These maps were meant to...

People have been exploring the oceans since prehistoric times, way before they had GPS to help them figure out where they were. Here are 6 ingenious ways our ancestors navigated the oceans.

Dive into the world of aquaculture and see how restorative ocean farming could play a vital role in helping our coastal communities, our oceans and our climate. -- For billions of people, seafood provides a significant source of...

Music is an integral part of Black American culture. Today, Clint Smith will teach you about rap & hip hop, and the cultural significance of artists including Public Enemy, Wu-Tang Clan, the Notorious B.I.G., Tupac, N.W.A., Queen...

Hank briefs us on the news of earthquakes in Indonesia and helps us understand why these had less impact than earthquakes which hit the area in 2004.

The world owes much of its cultural legacy to Constantinople's walls. When Constantinople was under seige by neighboring enemies, the Roman city's elaborate system of moats, outer walls, and inner walls stood tall. Surviving numerous...

A traveller from Gaetland arrives to ask for help in fighting the terrifying creature Grendel, and defend Heorot, the hall of King Hrothgar.

Most schoolchildren can find Italy on a map—it’s the “boot” that’s kicking an island into the middle of the Mediterranean Sea. The island is, of course, Sicily, and the boot is Italy’s mainland. Without a doubt, Italy’s complex natural...

Lying south of mainland Southeast Asia and north of the continent of Australia, Indonesia is the largest archipelago in the world. While it’s a vast country, only about 40 percent is land—the rest is sea. Strategically located between...

Whether it's energy, food or insurance, how much more you'll pay in the future depends a lot on where you live. But because of climate change, virtually no one will get away scot-free. The global economy is remarkably versatile and...

Howcast - Learn about Pork Barrel BBQ pitmasters Heath Hall and Brett Thompson, two of Howcast's barbecue experts, in this video.

Howcast - Check out part 4 and beat Episode 2: "The Cavalry" of Jurassic Park: The Game with this online demo of the third-person adventure .

Howcast -Learn how to buy a harmonica from music teacher Marcus Milius in this Howcast video.

A hypermiler does whatever they can to maximize gas mileage. There are safe ways to do this, and then there are extreme measures that are not worth the danger. We're going to tell you the difference.

The US Coast Guard rescued two people this weekend after their luxury sports yacht sank off the Florida coast.The operator of the Atlantis, an 80-foot yacht. alerted the US Coast Guard on Saturday morning that the boat had struck an...

Learn all about these fascinating creepy crawlers.

Contrary to popular belief, penguins don't only live in cold, icy locations... some are beach bums! These penguins have made a home on the shores of the southwest coast of Africa.

Learn all about these fascinating creepy crawlers.

** OGTV would like to take a moment to commemorate Armed Forces Day with a story about the unstoppable Ernie Andrus who is still on his latest Coast2Coast run doing his part to keep the memory of his comrades...