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It's leap year time... so what are years, anyway? And what do they have to do with the supermassive black hole in the core of the milky way?

Mr. G...

Why do some years have an extra leap day and what is it for?

Also check out MinutePhysics' video: http://www.youtube.com/watc... & SciS...

You can break the speed of light in your back yard! (but don't worry, Einstein is still right)

Tweet it - http://bit.ly/rOv00A

Facebook it - htt...

I was born deaf and 8 weeks ago I received a hearing implant. This is the video of them turning it on and me hearing myself for the first time :) ...

Join Pilot Bob Pittelkow & Instructor Ben McQuillan in the cockpit for a break-down of getting a clearance through busy Class B airspace. Bob is a ...

http://m0a.com Follow along as I talk with ground, tower, and even get passed off for VFR flight following in this weeks video

Watch my Glee Project audition! I sing about vandalism! Constructive!: http://thegleeprojectcastin...

EDIT: Wow! Thanks t...

What is the minimum amount of road needed to connect these four towns together? Known as the Motorway Problem or Steiner Problem. An experimental s...

Follow me on Twitter! @RobbyDonoho E-Mail me! Robby.Donoho@gmail.com

When all seems lost, the USA never seems to give in. Once again, USA soccer g...

Timbers fans, some who have waited in line for over 24 hours, are now able to get their hands on single-game tickets for the 2012 MLS season.

Bill uses a bucket of propylene glycol to show how a fiber optic cable works and how engineers send signal across oceans. More info at http://www.e...

This video was uploaded from an Android phone.