Earth Science Lecture Series - Evidence of a large, long-lived lake in the upper Navajo Sandstone

While large portions of the western United States are desert today, they are nothing compared to the mega-desert that covered the West about 190 million years ago. Despite giant sand dunes and oven-like temperatures, scientist Josh Smith has found evidence for thriving animal and plant communities. How were they able to survive? By using lakes hidden between the dunes. Join Josh on a journey back to the Jurassic and explore these desert lakes.