In case you did not know, Russia is huge! Not only is it the biggest country in the world, but it is even bigger than Pluto! (Russia is 17 million Sq Km, and Pluto is 16.6 Million Sq Km.) 77% of Russia lies in Siberia. Siberia almost stretches to Japan, yet this huge area is very sparsely populated. Most of the 145 Million people live on the European continent of Russia, not the the Asian-Siberian one. Siberia is mostly dense forests and tundras.