40 dead as storms head east; fire risk remains in parts of U.S.
At least 37 people have died across seven states as powerful storm systems swept through the Midwest and the South.
Travelers can hunt for million-year-old fossils and more valuable treasures in these spots
Travelers can dig up 66-million-year-old dinosaur fossils in New Jersey or mine for diamonds at an Arizona state park. See more U.S. locations where you can hunt for treasures.