Here’s how we find out how strong tornadoes were

Around 1,200 tornadoes occur on average in the United States each year and every one of them gets its own rating on the Enhanced Fujita Scale.
Smithsonian Magazine

Mule Deer Are Already Using California’s First Wildlife Crossing—and It’s Not Even Finished Yet

California’s first wildlife bridge isn’t finished yet, but that hasn’t stopped animals from using it. Mule deer have been photographed wandering over an in-progress overpass in Siskiyou County, ...