Preserving the unique history of the La Brea Tar Pits

Preserving the unique history of the La Brea Tar Pits

(CNN)Black gooey methane bubbles pop on the surface of the Lake Pit outside the La Brea Museum in Los Angeles. It’s the only warning of the sticky, heavy asphalt on the bottom of the pit. The asphalt seeps have been there for thousands of years, stemming from…
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