2013 has been a terrific year in the field of science with so much having been accomplished, but what are the biggest discoveries of the year? YouTube channel SciShow looks at three very big scientific discoveries that changed how we look at physics, Mars, and our ourselves!

3 Great Discoveries of 2013 [YouTube]

via How-To Geek http://www.howtogeek.com/178660/three-great-scientific-discoveries-of-2013/