Mountain lion "38F" before getting a radio collar from the Santa Cruz Puma Project.
A lot of Californians are hitting the road this holiday weekend and chances are drivers will see some road kill along on the way. Thousands of animals are hit every year in California -- and that takes a toll on both wildlife and drivers. Nationwide, wildlife collisions cause a billion dollars a year in damage. Some states are taking steps to help animals get across highways safely. As KQED Science reporter Lauren Sommer tells us, California has a lot more work to do. Reporter: Lauren Sommer