Success in your career looks different for everyone — but no matter your industry, you'll need to take risks. Company and community builder Molly Graham shares three key skills to learn before jumping off the metaphorical cliff,...

Pianos can't be perfectly tuned - it's a mathematical fact!

Social progress in the United States often seems to take two steps forward and one step back, with hard-fought civil rights wins countered by a seemingly inevitable backlash. In this spirited talk, writer Charles M. Blow makes the case...

Is it possible that this century is the most important one in human history? The 21st century has already proven to be a period of rapid growth. We're on the cusp of developing new technologies that could entirely change the way people...

The United Nations world heritage body, UNESCO, wants Greece to stop

installing concrete paths around the iconic Parthenon atop the Acropol
is in
Athens. Much of the work has been completed, intended to ma
ke it...

On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public latrines. Today, most cultures consider trips to the restroom to be a more private occasion. But even...

Henry Reich of MinutePhysics and MinuteEarth talks about statistical paradoxes and quantum entanglement. Afterwards, Jessi from Animal Wonders joins the show with two Red-Footed Tortoises!

Reuse of syringes, all too common in under-funded clinics, kills 1.3 million each year. Marc Koska clues us in to this devastating global problem with facts, photos and hidden-camera footage. He shares his solution: a low-cost syringe...

Pianos can't be perfectly tuned - it's a mathematical fact!

The human voice is capable of incredible variety and range. As we age, our bodies undergo two major changes which explore that range. So how exactly does our voice box work, and what causes these shifts in speech? Shaylin A. Schundler...

Paul Andersen introduces the topic of Biology. He covers each of the four main ideas that were developed by the College Board. These ideas revolve around the concepts of evolution, free energy, information and systems.

In this video Paul Andersen describes the pros and cons of industrial agriculture including: monocropping, irrigation, and the use of pesticides, fertilizers, and GMOs.

In this episode of Crash Course Kids, Sabrina gives us a real world example of how the Hydrosphere and Geosphere affect each other in the form of Weathering and Erosion. Think of Weathering as the force that makes a mess and Erosion as...

Let's say you're looking for a specific constellation in the sky, but can't find it? That could be because you're on the wrong part of the planet to see it. In this episode of Crash Course Kids, Sabrina talks about how the Earth's...

We really need good treatments for Alzheimer's. But Biogen's very expensive and maybe not that effective drug Aduhelm is not the treatment we're looking for. Today we look at the saga of Adulhelm's approval and it's road to acceptance...

Volume swells can make single notes sound like a violin and chords like an orchestra.

Once you've got simple major and minor chords under your fingers, 7th barre chords are the next stage to make your playing sound more professional. Stuart Ryan shows you the relevance of the major 7, minor 7 and dominant 7 chords.

Germans are avid newspaper readers, and the traveler will soon become familiar with the major ones. Unlike other European countries, there are only four major national newspapers. Learn about each one, including what each covers. If your...

Singapore is a secular state, and people of all religions are free to worship. This history of religious tolerance dates back to a time when traders, immigrants, and conquerors introduced the islanders to their religions. Over the...

In this video, you will learn about the malicious software called trojans and how they operate. We will also look at how to eradicate trojans.

This video elaborates on what encryption is, the types of encryptions, and how to differentiate between them.

In this video, we will understand computer protocols defined to work behind the scenes when any process is performed over the Internet. We will understand the difference between HTTP and HTTPS, SSL and SSH, and IMAP and SMTP.

This video is the solution to the quiz/exercise based on the concepts learned in this section.

By 2050, the number of Muslims around the world will nearly equal the number of Christians, as Islam will grow faster than any other major world religion.