Geological Sciences | Science Communication
via How an Ancient Society in the Sahara Desert Rose and Fell with Groundwater Pittsburgh, Pa., USA: With its low quantities of rain and soaring high temperatures, the Sahara Desert is often regarded as one of the most extreme and least habitable environments on Earth. While the Sahara was periodically much greener in the distant… Continue reading How an Ancient Society in the Sahara Desert Rose and Fell with Groundwater
https://www.youtube.com/watch?v=1SXaMH8gV6I Earth fissures are long, narrow cracks in the ground that form where the ground is sinking. They can erode very quickly, posing a hazard to nearby infrastructure. In Arizona, land subsidence--the sinking of the earth--is caused by groundwater withdrawal, meaning that earth fissures are a man-made--or anthropogenic--hazard. This video that I made as part… Continue reading Understanding Earth Fissures: A Man-Made Geohazard
Emily Zawacki, Ph.D. 