Paralyzed by a stroke, Henry Evans uses a telepresence robot to take the stage and show how new robotics, tweaked and personalized by a group called Robots for Humanity, help him live his life to the full. He shows off a nimble little...

Chris Abani tells stories of people: People standing up to soldiers. People being compassionate. People being human and reclaiming their humanity. It's "ubuntu," he says: the only way for me to be human is for you to reflect my humanity...

Howcast - Learn the finishing the double technique from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn how to do side control escapes from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part two of two.

Howcast - Learn how to do the flying knee technique from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part one of two.

Howcast - Learn how to strike past the guard from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn N/S escapes from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn three ground fighting defense techniques from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn how to do side control escapes from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part one of two.

Howcast - Learn the back control submission rear naked choke (RNC) from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn techniques to take the back from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part two of two.

Howcast - Learn the cage fighting tactics clinches and dirty boxing from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn how to do a hip throw from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn how to do the single leg counter from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part two of two.

Howcast - Learn how to do the flying knee technique from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video, part two of two.

Howcast - Learn how to counter a cross from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn slip basics from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn block basics from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn drills and fundamental movements from Team Radical MMA head coach Rene Dreifuss in this Howcast MMA video.

Howcast - Learn how to do a rolling omoplata MMA submission against a single leg takedown from Team Radical MMA head coach Rene Dreifuss in this Howcast video.

Howcast - Learn how to do a crucifix omoplata MMA submission from Team Radical MMA head coach Rene Dreifuss in this Howcast video.

Howcast - Learn how to do a triangle choke from side control MMA submission from Team Radical MMA head coach Rene Dreifuss in this Howcast video.

Howcast - Learn how to do a triangle choke from side control against a wrestler's pin from Team Radical MMA head coach Rene Dreifuss in this Howcast video.

Howcast - Learn how to do an arm triangle choke from the bottom half guard position from Team Radical MMA head coach Rene Dreifuss in this Howcast video.