Unlike Earth, our Sun is a giant ball of mostly hydrogen and helium. Astronomers managed to figure that one out roughly 100 years ago. But after all this time, they still can't come to an agreement on what "mostly" means, precisely.

Pin-pricks in the celestial sphere, through which shines the light of heaven? Or gods and heroes looking down from their constellations? Or lights kindled above middle earth by Varda Elbereth and brightened with the dew of the trees of...

Somewhere in the Pacific Ocean, there's a fish that's . . . a little different. Join us for a new episode of SciShow where Hank will tell you all about the Pacific Barreleye Fish and what makes it so mysterious....

Sometimes science creates a mystery, and it can be very difficult to solve! Join Hank for a fun new episode of SciShow about five mysteries started and later solved by science. Let's go! Hosted by: Hank Green

The Sun: an entity worshipped as a god throughout time and across cultures. The source of all life and sustenance for our little blue space rock, and also a force of unthinkable destructive power. But soon humanity will reach out its...

Investigate the theories surrounding cosmic dust bunnies and discover how the tiny particles could hold the key to the formation of life on Earth. -- Consider the spot where you’re sitting. Travel backwards in time and it might’ve...

Have you ever been waiting in line at the grocery store, innocently perusing the magazine rack, when a song pops into your head? Not the whole song, but a fragment of it that plays and replays until you find yourself unloading the...

How do we explain the unexplainable? This question has inspired numerous myths, religious practices and scientific inquiries. But Zen Buddhists practicing throughout China from the 9th to 13th century asked a different question - why do...

We can’t find evidence of the Sun’s family, or how it might have formed, but we do have some pretty good theories.

The most common type of exoplanets might be worlds like our ice giant, Uranus. Understanding it could be key to the history of planets all over the galaxy.

It's time for the end. At least the end of our first series on Physics here at Crash Course. In this episode of Crash Course Physics, Shini sits down to talk about Astrophysics and Cosmology. By using what we've learned this year, we can...

Asking questions almost always leads to finding answers, but those answers will often pose even more questions. Here are five mysteries started and later solved by science.

With almost 100 mystery novels, each one a cleverly constructed puzzle box of clues, misdirection, and human drama, Agatha Christie is the best-selling novelist of all time. Her eccentric detectives, clever clues, and simplified suspects...

Howcast - Check out part 7 and discover your fate with this online demo of Kingdoms of Amalur: Reckoning, the action RPG from 38 Studios and Big Huge Games.

Howcast - Learn about British Traditional Wicca (BTW) from Wiccan High Priestess Phyllis Curott in this Howcast video.

Howcast -Learn what palm reading, also known as palmistry, can do for you from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Howcast -Learn how to read the Empress tarot card from expert Ellen Goldberg, M.A. in this Howcast video.

The planet's trees have seen plenty of history pass by their trunks. In fact, they began to populate Earth 385 million years ago, toward the end of the Devonian period. Considered living historical records, the organisms can withstand...

The world of Disney is full of secrets, myths and mysteries! Who actually created Mickey? Is Walt’s body on ice? What happened to the abandoned Disneylands? Join us as we investigate the top 5 secrets of Disney.<br/>

Why do dunes sing? Head into the mysterious world of sand with host Joe Hanson! Along the way we meet Dr. Melany Hunt and Dr. Nathalie Vriend who solved the longstanding mystery of why dunes sing.

Follow Joe Nickell, a seasoned paranormal investigator, as he debunks myths of ghosts, UFOs, and monsters with scientific inquiry.

Unravel the enigma of ancient languages with the Rosetta Stone! Join us on a linguistic journey as we explore the significance of this iconic artifact. Discover how its discovery in 1799 unlocked the secrets of Egyptian hieroglyphs,...

Discover the many theories about Stonehenge’s purpose, from its potential role as an ancient calendar to a site for religious rituals and burials. Learn about the evidence pointing to ceremonies, feasts, and even possible healing...

Dive into 'Lie Detector' to see how it attempts to catch fibs in action! A fun, brief look at truth-telling tech for kids.