4 degrees warmer: great cities wash away | national geographic Published 16 years ago • 206K plays • Length 2:36 Download video MP4 Download video MP3 Similar videos 1:12 6 degrees warmer: mass extinction? | national geographic 22:14 this will be my most disliked video on youtube | climate change 1:39:51 wild france as you have never seen it - in the heart of french wildlife 16:24 see what three degrees of global warming looks like
