la brea tar pits

Preserving the unique history of the La Brea Tar Pits

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 a nearby underground large petroleum reservoir called Salt Lake Oil Field.

Why do coyotes still exist, but not saber-toothed cats?

Thousands of years ago, animals and the predators who tried to attack them became trapped in the La Brea Tar Pits, providing a treasure trove of fossils for research. Now, a detailed study of the predators found trapped in the tar is shedding light on why some are still found on Earth today but others went extinct.