In this video Paul Andersen you how to ask questions in a mini-lesson on Observational Questions. Two examples are included in the video and two additional examples are included in the linked practice slides. <br/>

Montana sapphires come in a beautiful array of colors found in a few other places in the world. But geologists have no idea where they originated.<br/>

Zabargad Island in the Red Sea is so crusted with peridot that it's fair to say the place is literally made of it. <br/>

From self-healing asphalt to electrified roads, technology is steering the future of driving along some exciting new paths!

Do you want to know how some of Earth's most fascinating mysteries have been solved by science? Join us and learn about 5 thought-to-be unexplainable mysteries—explained! Hosted by Hank Green.

According to research, some animals act in ways that seem oddly similar to the things we do.

Two new studies challenge what we thought we knew about the first humans in the Americas. Could people have been on these continents 10 to 15 thousand years earlier than archaeologists previously thought? Join Stefan Chin and learn more...

The fabled Mirzakhani wand is the most powerful magical item ever created. And that's why the evil wizard Moldevort is planning to use it to conquer the world. You and Drumbledrore have finally discovered its hiding place in a cave, but...

Ancient Stonehenge Faces Modern Problems With Plans For A Nearby Tunnel To Ease Traffic

In this short talk, TED Fellow Sarah Parcak introduces the field of "space archaeology" -- using satellite images to search for clues to the lost sites of past civilizations.

From self-healing asphalt to electrified roads, technology is steering the future of driving along some exciting new paths!

Asgard, a realm of wonders, was where the Norse Gods made their home. There Odin's great hall of Valhalla towered above the mountains and Bifrost, the rainbow bridge, anchored itself. Though their domain was magnificent, it stood...

Learn about Mary Anning, one of England's most important contributors to the field of paleontology.

Matthew Gaydos, producer of Animal Wonders, The Financial Diet, and Sexplanations, faces off against Hank Green! Watch them show off their knowledge of the birds and the bees, literally!

Jessi and Squeaks learn some amazing turkey facts, from the sounds they make to what their poop looks like!

According to research, some animals act in ways that seem oddly similar to the things we do. Chapters CROWS HOLD GRUDGES 1:50 COWS NEED FRIENDS 2:36 AFRICAN WILD DOGS VOTE 3:59 DOLPHINS GOSSIP 5:29 BEES BECOME PESSIMISTS 6:59 6 PENGUINS...

Hang Sơn Đoòng in Phong Nha-Kẻ Bàng National Park is the largest known cave in the world, big enough to have its own jungles, weather, and... pearls?

DNA isn’t the simple, loose double-helix you might see in a biology textbook, so isolating single strands of it can be next to impossible. But with some simple tricks of physics, scientists came up with a special type of tweezers that...

As soon as Pharaoh Khufu ascended the throne circa 2575 BCE, work on his eternal resting place began. The structure's architect, Hemiunu, determined he would need 20 years to finish the royal tomb. But what he could not predict was that...

Why are some stones round and others flat?

Two new studies challenge what we thought we knew about the first humans in the Americas, sending the archaeology community buzzing. Could people have been on these continents 10 to 15 thousand years earlier than archaeologists...

Just because something is difficult doesn't mean it's impossible. Over the past centuries, archaeologists, historians, and engineers have reconstructed a great deal of the technology and science used to build the Egyptian pyramids. This...

Paved roads are nice to look at, but they're easily damaged and costly to repair. Erik Schlangen demos a new type of porous asphalt made of simple materials with an astonishing feature: When cracked, it can be "healed" by induction heating.

The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn't actually swallow a stone the size of a coconut; kidney stones form inside the body. So how do they grow in the first...