Does the planet need saving? - Earth - The Power of the Planet - BBC

Is the planet able to cope with all we throw at it? Are we pumping too much carbon dioxide into the atmosphere? Dr Iain Stewart assesses the impact of man on our planet in the ground-breaking BBC series. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth