tekidi1's channel

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...

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...

The uncut version of my book trailer for Miss Peregrine. Available in bookstores June 7th!

Read sample chapters and find out where to purchase the...

2,000 Years of Chinese History! The Mandate of Heaven and Confucius:

Crash Course World History #7

In which John introduces you to quite a lot of ...

Only pussies cry! Like & Favorite!

http://www.moddb.com/mods/c...

Facebook: http://www.facebook.com/Rob......