Chicago -
A giant prehistoric fish once thought to be extinct could be the solution to the worsening invasion of non-native Asian carp that is choking U.S. rivers and crowding out local species.
Springfield -
More than 112 million people will visit America's most popular outdoor store this year, and a look inside the original store shows you why Bass Pro Shops are so popular.
PROBLEM-SOLVERS?: A group of alligator gars (atractosteus spatula) swim at the Steinhart Aquarium, part of the California Academy of Sciences in San Francisco's Golden Gate Park, in 2009.
