Every year the moon’s orbit gets a little bigger and it moves just a little farther away. Should we worry about the Moon breaking free?

Understanding gravity can sometimes be a bit of a balancing act, much like the fundamental laws of physics and how they inform what it is exactly that Earth orbits.

In this episode of Crash Course Chemistry, Hank goes over the ideas of keeping your life balance... well, your chemical life. Equilibrium is all about balance and today Hank discusses Chemical Equilibrium, Concentration, Temperature, and...

In this video Paul Andersen explains how the law of conservation of energy applies to both energy and mass. Einstein showed that mass and energy are equivalent and that the amount of energy contained within matter can be calculated...

In this video Paul Andersen begins by discriminating between translation and rotational motion. He then explains how a torque is the product of the lever arm and the force perpendicular. The lever arm must be perpendicular to the axis...

Today Shini explains the law of conservation, beginning with simple, steady-state systems. We’ll discuss conversion and yield, accumulation, and how generation and consumption can affect how much accumulation there is in a system.

It might sound like a concept from science fiction, but artificial intelligence is already facilitating the development process behind some pharmaceuticals.

Nearly one third of our food ends up in the trash can. There is hope, however, in the form of worms, which naturally convert organic waste into fertilizer. Matthew Ross details the steps we can all take to vermicompost at home -- and why...

"Building a 30-foot-high concrete structure from sea to shining sea is the most expensive and least effective way to do border security," says Congressman Will Hurd, a Republican from Texas whose district encompasses two times zones and...

In 1991, Shaka Senghor shot and killed a man. He was, he says, "a drug dealer with a quick temper and a semi-automatic pistol." Jailed for second degree murder, that could very well have been the end of the story. But it wasn't. Instead,...

The Internet is older than you might think!

Did you know the rights to "Happy Birthday" are still privately held today? Copyright was originally created for two reasons: to protect the original creators so they could benefit from their work AND have creative works enter the Public...

In this week's news we discover that Tatooine has got nothing on HD 131399Ab's wide orbit, and there's a some really cool jets coming out of a supermassive black hole.

From the ability to see “invisible” types of light to the power to taste all over their body, meet five incredible animals whose super senses far surpass our own! Chapters STAR-NOSED MOLES 3:04 HARBOR SEALS 4:56 CATFISH 6:49 BEARS 8:26

Vitamins are the building blocks that keep our bodies running; they help build muscle and bone, capture energy, heal wounds and more. But if our body doesn't create vitamins, how do they get into our system? Ginnie Trinh Nguyen describes...

Artificial intelligence is rapidly becoming an integral part of our everyday lives. Here’s a number of ways in which it manages to make life better for us humans.

Scientists have spotted a galaxy from the early origins of the universe, and found evidence to support the existence of a 9th planet in our solar system.

At the end of our lives, what do we most wish for? For many, it's simply comfort, respect, love. BJ Miller is a hospice and palliative medicine physician who thinks deeply about how to create a dignified, graceful end of life for his...

Day by day, country by country, we tend to measure seasons differently.

In this video Paul Andersen explains how conservative forces can be used to store potential energy in an object or a system. The work done is equal to the amount of potential energy in the object. The following conservative forces are...

If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding...

So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course Physics, Shini talks to us about electric...

In fantasy stories, charlatans in fancy robes promise to turn lead into gold. But real alchemists weren’t just mystical misers. They were skilled experimentalists, backed by theories of matter.

And they played a huge role in the...

Paul Andersen starts this video with a description of the respiratory surface. He explains how worms, insects, fish and mammals take in oxygen and release carbon dioxide. He then tours the major organs of the respiratory system; from...