Alpine ibex cling to the Cingino Dam as they lick the minerals and salts off the rocks, left behind by water seeping through the dam wall.
The forces of nature make Earth a restless planet, but they also turned our ball of rock into a home for life. How did our planet’s ingredients, the chemical elements, come together and take that first crucial step from barren rock to a living world?
PBS
Forces of Nature: Elements, Tuesday at 9 p.m. on PBS 6.
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