Hank and the gang return with SciShow Quiz Show, where Sci Show's resident geniuses compete to win prizes for our subscribers!

Accepting his 2008 TED Prize, author Dave Eggers asks the TED community to personally, creatively engage with local public schools. With spellbinding eagerness, he talks about how his 826 Valencia tutoring center inspired others around...

Mike Rowe, the host of "Dirty Jobs," tells some compelling (and horrifying) real-life job stories. Listen for his insights and observations about the nature of hard work, and how it's been unjustifiably degraded in society today.

Science fiction writer Monica Byrne imagines rich worlds populated with characters who defy our racial, social and gender stereotypes. In this performance, Byrne appears as a hologram named Pilar, transmitting a story of love and loss...

Weeks from the Charter for Compassion launch, Karen Armstrong looks at religion's role in the 21st century: Will its dogmas divide us? Or will it unite us for common good? She reviews the catalysts that can drive the world's faiths to...

Inventor Dean Kamen previews the prosthetic arm he’s developing at the request of the US Department of Defense. His quiet commitment to using technology to solve problems -- while honoring the human spirit -- has never been more clear.

Wes Moore joined the US Army to pay for college, but the experience became core to who he is. In this heartfelt talk, the paratrooper and captain -- who went on to write "The Other Wes Moore" -- explains the shock of returning home from...

In 1984, ice was accumulating on the side of the Space Shuttle Discovery, spelling possible disaster, luckily it was the first mission of Dr. Judith Resnik, and the Canadarm.

Emily Graslie joins us to share the wonder of how shoulders, humble as they may be, have played a huge role in the evolution of mammals the world over. Thanks to the Museum of Comparative Zoology at Havard and The Field Museum for...

Standing up to discrimination and hate should be everyone's business, says community activist Wale Elegbede. In this vital talk, he shares how his community in La Crosse, Wisconsin came together to form an interfaith group in response to...

New ReviewAfter Grendel's mother attacks the celebrating Heorot, Beowulf and his men pursue her. Inside the sea cave, Beowulf fights the terrible Sea Hag.

Tight from sitting all day? Try these two powerful chair yoga stretches to instantly release neck tension and discomfort from sitting at your desk or working on a computer all day. These quick and effective seated yoga moves help relieve...

This World Cultures video discusses the rise of Alexander the Great.

AJ Muss is just 23 years old, but his has been an eventful life so far. As an alpine snowboarder, AJ qualified for this year's Winter Olympics in PyeongChang, South Korea, competing for Team USA— but that's not the...

Howcast - A staple break-dancing move, learn the Windmill to transition into even more difficult dance techniques.

Howcast - Cuddling is a great way to relax and bond with your friend or loved one. Here's how to get the most out of your time together.

Howcast - Cardiac emergencies can happen anywhere. Be prepared with a simple technique known as hands-only CPR. You can learn it in minutes, it's easy to remember, and it can help save a life.

Howcast - Let belly dancer Irina Akulenko teach you how to do snake arms in this belly dancing video from Howcast.

Howcast - Let belly dancer Irina Akulenko teach you how to do shoulder isolations in this belly dancing video from Howcast.

Howcast - Learn how to do the bboy dance move known as the windmill in this Howcast breakdancing tutorial with choreographer Victor "Kid Glyde" Alicea.

Howcast - Learn how to do a b-boy backspin with normal whip in this Howcast breakdancing tutorial with choreographer Victor "Kid Glyde" Alicea.

Howcast - Learn how to avoid a motorcycle crash in this Howcast motorcycle video with expert Kenyon Kluge.

Howcast - Learn how to throw a punch from kickboxing champion Phil Nurse in this Howcast UFC training video.

Howcast - Learn about the dirty boxing clinch from kickboxing champion Phil Nurse in this Howcast UFC training video.