Why does ice float when most other solids sink? Join Dr. Helen Czerski at the stunning Yockelsarland Lagoon in Iceland as she uncovers the secrets of water’s molecular structure.
Best of Earth Science: http://bit.ly/EarthLabOriginals
Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos
This Clip is taken from the BBC Series 'From Ice to Fire: The Incredible Science of Temperature'
This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx