When you think of a toadstool, the first thing that comes to your mind is probably some sort of mushroom, perhaps bright red with white spots. For geologists, though, a toadstool is something ...

Add Yahoo as a preferred source to see more of our stories on Google. Looking for underrated roadways in the United States? Consider a journey down Interstate 90 through the Badlands of South Dakota.

Road trips remain popular because they’re cheaper than flying and offer the freedom to explore beyond the beaten path.