Story Topics | Natural History Museums of Los Angeles County

Welcome to the 2023 LA BioBlitz Challenge

Help discover the incredible biodiversity all over Los Angeles!

Extinction and Survival at La Brea Tar Pits

Groundbreaking new research from La Brea Tar Pits curators finds that in California, 13,000 years ago, huge Ice Age mammals that had roamed the landscape for many millennia, suddenly ceased to exist. The cause? Humans, catastrophic fires, and an ecosystem made vulnerable by climate change.

Life reconstruction of fire at La Brea Tar Pits during the Pleistocene as bison are stuck during a wildfire

Why Did the Ice Age Titans Go Extinct?

A new study reveals that human impacts in an environment made fire-prone by climate change and herbivore loss led to large mammals vanishing from southern California.

Playing With Fire: Extinction and Survival at La Brea Tar Pits

In California, 13,000 years ago, huge Ice Age mammals that had roamed the landscape for many millennia, suddenly ceased to exist. The cause? Humans, catastrophic fires, and an ecosystem made vulnerable by climate change.