SpaceX's Starship launch vehicle has the potential to explore the solar system in a bold, new -- and supersized -- way. Planetary scientist Jennifer Heldmann talks about how reusable, large-scale spacecraft like Starship could help...

The thing about European History is that it tends to leak out of Europe. Europeans haven't been great at staying put in Europe. As human beings do, the people of Europe were very busy traveling around to trade, to spread religion, and in...

Once upon a time, for thousands of years, the human beings on two continents, Europe and North America, just ignored each other. Then, in the late 980s, a group known as the Norsemen, more famously known as Vikings, left Iceland, heading...

👉Learn how to solve quadratic equations by factoring the difference of two squares. We can identify the difference of two squares but looking for binomials that have square terms. Difference of two square quadratic equations is of the...

Dr. Forrester teaches about how proper hygiene keeps you healthy.

The ecological niche of apex predators was empty on Hateg Island, waiting to be occupied by something large, mobile, and powerful enough to fill it.

Ocean explorer Robert Ballard takes us on a mindbending trip to hidden worlds underwater, where he and other researchers are finding unexpected life, resources, even new mountains. He makes a case for serious exploration and mapping....

We're not doing frontline exploratory science in a huge portion of the world -- the places governments deem too hostile or disputed. What might we be missing because we're not looking? In this fearless, unexpectedly funny talk,...

The government closed brothels to clamp down on human trafficking. But that move put the country's prostitutes in grave danger. Reported and produced by Steve Sapienza for NPR Reporting for this story was supported by The Pulitzer Center...

When you think about coral reefs, you probably imagine a sparkling tropical oasis that you can easily see while snorkeling or diving, but reefs can be found as deep as 8000 meters! As deep as they are, those reefs are still not immune to...

Everyday we use many natural resources from Earth. This engaging program highlights some examples of ways we use natural resources. Differences between renewable and nonrenewable resources are also investigated.

Upon viewing the Exploring Freshwater Biomes video series, students will be able to do the following: List some of the ways fresh water is used in daily life. Understand how and why fresh water is so important to the lives of humans and...

Upon viewing the Exploring Freshwater Biomes video series, students will be able to do the following: List some of the ways fresh water is used in daily life. Understand how and why fresh water is so important to the lives of humans and...

Karma is our own patterns, while it's easier to blame external factors, the real solution lies within us.

Howcast - Learn three proper sword etiquette tips from Sensei Oliver Martin in this katana sword fighting video from Howcast.

What has eight arms, three hearts, and and lives in the ocean? An octopus! Join Jessi and Squeaks as they take a dive into the amazing world of the super weird, super smart octopus!

Photographer Brian Skerry has seen the state of the world's oceans decline since he began his career three decades ago and believes humanity must reverse course in order to survive. ➡ Subscribehttp://bit.ly/NatGeoSubscribe'...

Near Bermuda in the Atlantic Ocean, currents define the Sargasso Sea—the only sea that is not defined by land boundaries. Known by some as a floating rain forest, the Sargasso Sea is named for the free-floating seaweed Sargassum and...

Narwhals react to stress differently from many other animals, and that may increase the danger they face from human contact. ➡ Subscribehttp://bit.ly/NatGeoSubscribe' target='_blank' rel='nofollow'>Subscribe About National...

Richard Hansen talks about how the idea of creation was altered by the discovery of an ancient society. ➡ Subscribehttp://bit.ly/NatGeoSubscribe' tGodet='_blank' rel='nofollow'>herecribe ➡ Get Season 1 GodThe Story of