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View full lesson: http://ed.ted.com/lessons/how-polarity-makes-water-behave-strangely-christina-kleinberg
Water is both essential and unique. Many of its particular qualities stem from the fact that it consists of two hydrogen atoms and one oxygen, therefore creating an unequal sharing of electrons. From fish in frozen lakes to ice floating on water, Christina Kleinberg describes the effects of polarity.
Lesson by Christina Kleinberg, animation by Alan Foreman.