California is home to some of the country's top natural wonders, and it's also home to many of America's best destinations for thrilling outdoor recreation. It should therefore come as no surprise ...

Our two-person team loaded the car with a GPS, a drone, notebooks, sample bags, a trowel and a flat spatula lovingly called a scoopula. Then we drove 30 minutes in our rented truck from Yuma, Arizona, ...