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Why do mountains tend to have a triangular shape? How much rain must fall to start a river? How do single grains of sand accumulate into a dune? This episode from the Amazing Planet series answers those and other geologic questions by capturing th...
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Contents
Nature's Elements (3:20) -- History of the Grand Canyon (4:19) -- Natural, Sculptural Displays (2:28) -- Destruction and Regeneration (5:26) -- Niagara Falls (5:17) -- Waterfalls and Cataracts (4:56) -- Caves: Water's Patient Power (3:55) -- Water...
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