Trying to figure out where that confiscated rhino horn came from? Is that guitar made from a piece of endangered tropical hardwood? You might find the answers to your questions at the US Fish & Wildlife Service's Forensic Lab in Ashland, Oregon, the only one like it in the world.
A brown, fuzzy alga called didymo is invading cold trout and salmon streams. Didymo, better know as rock snot, and perplexed scientists are trying to figure out how and why it's rapidly spreading in North America.
For today's Geo Quiz, we asked what direction you're traveling in if you're crossing the Panama by train from the Pacific to the Atlantic. The answer is northwest. Reporter Murray Carpenter recently took the train ride and sent us an audio postcard.
Brook trout are in trouble throughout much of their native range in the eastern United States ?but they're alive and well in the waters of Maine.