The ocean is the largest ecosystem on Earth, but it's still mostly unexplored. This is partially due to the challenges of ocean exploration, like bone-crushing pressure and the need to bring your own air. But here are five ways that...

SciShow takes you down the deepest hole in the world -- Russia's Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth in the process. Don't fall!

Augmented reality isn’t just science fiction anymore! In this episode, Michael becomes a hologram and Hank explains how one set of new technologies made it happen.

Marie Tharp's topographical maps increased our understanding of both the ocean floor and the processes that move the earth's crust.

Scientists have observed a collision of two of the universe's most extreme objects. And a mission to Jupiter's moon Europa makes an important step forward.

Learn about buoyancy and pressure in this physics experiment! See why the scale reading stays the same, even with a steel sphere submerged. Perfect for students curious about forces, pressure, and fluid dynamics.<b<br/>r/>

For two decades, scientists were baffled by perfectly aligned holes discovered miles deep on the ocean floor. This is the story of the deep-sea detective work that finally identified the clever crustacean architect behind the Pacific...

Learn 3 Tips to Stop Oversharing. We've all been part of a conversation where someone has said too much too soon and it made things turn awkward very quickly. <br/>

This video provides an informative explanation of depth of field in photography. It begins by defining depth of field as the areas of an image that appear clear and in focus, and highlights how it can be used to draw attention to...

A video entitled "Ocean Properties" which talks about the temperature, salinity, and color of the ocean.

Howcast - Learn how to glaze your acrylic work from painter Linda Rhea in this Howcast video.

Howcast - Learn how to make mortise and tenon joints from Makeville Studio in this Howcast woodworking video, part 2 of a 2-part series.

Howcast - Learn how to make mortise and tenon joints from Makeville Studio in this Howcast woodworking video, part 1 of a 2-part series.

Howcast - Learn eight digital camera aperture tips from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.

Howcast - Learn about robotic hair transplants from hair transplant surgeon Craig Ziering, MD in this Howcast video.

Howcast - Nymph fishing is a challenging fly fishing technique that requires fishing with the fly underwater.

Howcast - Learn how to increase depth in graffiti art by using a contrast color in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you the top five tennis tips in this Howcast video.

Howcast - Learn how to make brisket tacos from Brooklyn Taco Co. chef/owner Jesse Kramer in this Howcast video.

Howcast - Learn what is the best f-stop, ISO and shutter speed for portraits from professional photographer Joe Sinnott in this Howcast photography tutorial.

Howcast - Learn how to use your phone as a camera from professional photographer Luke Ballard in this Howcast video.

The aperture is the opening by which light enters your camera. When altered, it produces drastically different effects.

Learn six basics of food photography from professional photographer Chris Ryan in this Howcast video.

Let's tell the audience briefly about what a bathyscaphe is, who invented the first bathyscaphe, what types there are and where they are used, what bathyscaphes can do, what they are made of, etc.