Space physicist Miho Janvier studies solar storms: giant clouds of particles that escape from the Sun and can disrupt life on Earth (while also producing amazing auroras). How do you study the atmosphere on the Sun, which burns at...

Nearly 450 million people are affected by mental illness worldwide. In wealthy nations, just half receive appropriate care, but in developing countries, close to 90 percent go untreated because psychiatrists are in such short supply....

You might have heard that playing violent video games makes people more aggressive, but is it true or is it just a myth?

Last week scientists announced that they’ve likely identified the very first astrophysical source of high-energy neutrinos.

Why is my weather app sometimes wrong? Well it has a lot to do with wind. Jet Streams, air cells, the shape and movement of the Earth... there are a lot of things that make weather a little unpredictable. In this episode of Crash Course...

Conceptual artist and TED Fellow Sanford Biggers uses painting, sculpture, video and performance to spark challenging conversations about the history and trauma of black America. Join him as he details two compelling works and shares the...

SciShow explains the genetics -- and physics -- behind why blue eyes are blue, and what the future may be for the trait. Spoiler alert: Blue eyes aren't really blue! SciShow explains!

From village to metropolis, global flooding is on the rise, and traditional approaches to managing the swells won't cut it, says water resource engineer Virginia Smith. Giving an overview of the dynamic shift needed to stymie the flow of...

Across the southeastern United States, bald eagles have been dying unexplainedly for the past 25 years. In March of 2021, researchers announced that they had found the killer, and they hope we can use this knowledge to better protect...

Paul Andersen explains how populations interact in an ecosystem. The symbiosis of several populations is based on effects that may be neutral, positive, or negative. Interactions like mutualism, commensalism and parasitism are...

Conservationist and TED Fellow Moreangels Mbizah studied the famous Cecil the lion until he was shot by a trophy hunter in 2015. She wonders how things could've gone differently, asking: "What if the community that lived next to Cecil...

So, how are people fixing their water problems? In this episode of Crash Course Kids, Sabrina talks about a few different examples how some freshwater sources were good, then bad, then made good again. Also, Sabrina talks about...

In this video Paul Andersen explains how electromagnetic induction occurs when the magnetic flux of an object changes. The magnetic flux is product of the surface area perpendicular to the magnetic field and the magnetic field strength....

We need a more considered approach to using social media for social justice, says writer and activist Ione Wells. After she was the victim of an assault in London, Wells published a letter to her attacker in a student newspaper that went...

In this video Paul Andersen explains how the climate on the earth is affected by the amount of solar radiation and the greenhouse affect. The addition of anthropogenic greenhouse gases has led to global warming which is impacting humans...

As we keep pumping carbon dioxide into the atmosphere, more of it is dissolving in the oceans, leading to drastic changes in the water's chemistry. Triona McGrath researches this process, known as ocean acidification, and in this talk...

The Hindu Kush Himalaya region is the world's third-largest repository of ice, after the North and South Poles -- and if current melting rates continue, two-thirds of its glaciers could be gone by the end of this century. What will...

A video entitled "Conduct Simulation" which shows how to build a simulation to solve a multi variable probability problem.

Have you ever noticed that Teresa never stands up or walks? That's because Teresa is a paraplegic and confined to a wheelchair.



On this emotional and revealing episode of Mom & Me, Teresa tells us the heart-wrenching...

After tragedy, love, support and togetherness are needed most. Adam Keller and Jared Marinelli, best known around the world for their ‘viral flash mob wedding proposal video’, were deeply affected by the tragedy in Orlando. The...

Howcast - Learn how to become a better person from life coach Stephanie Florman in this Howcast video.

Howcast - Learn how to treat a leaking heart valve from Dr. Dennis Finkielstein in this Howcast video.

Acne affects people of all ages and all races, and treating it is a slow process that requires diligence and patience. Here are some tips to help you get started.

Animation showing the build up of plaque in the arteries, slowing or blocking the flow of blood in the body