La Brea tar pit scientists find mammoths, saber-tooth cats, dire wolves and more in asphalt. Here's how they've uncovered ...

Interestingly, the Carolina parakeet may have been poisonous. The bird ate cockleburs (Xanthium strumarium), a thorny native plant that is itself toxic to many animals. The 19th-century naturalist ...

The use of this vitamin supplement is limited to one week only. The supplement contains xanthium, which may cause allergic reactions in some people. The pills have a distinct flavor that may not ...

Scientists have been extracting huge fossils from the La Brea tar pits since 1913. Many of the animals lived during the Ice Age, as far back as 50,000 years ago. The tar pits have preserved an ...

Scientists have been extracting huge fossils from the La Brea tar pits since 1913. Many of the animals lived during the Ice Age, as far back as 50,000 years ago. The tar pits have preserved an entire ...