What is the Smallest Organism on Earth? | Wonders of Life w/ Prof Brian Cox | BBC Earth

Professor Brian Cox looks at the organism that takes up most of our planet, the smallest microorganism of all, bacteria. Taken from Wonders of Life. Subscribe to BBC Earth: http://bit.ly/BBCEarthSubBBC Earth YouTube Channel: http://www.youtube.com/BBCEarth BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only) BBC Earth Twitter http://www.twitter.com/bbcearth Visit http://www.bbc.com/earth/world for all the latest animal news and wildlife videos This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/