Ken Baker with a clear glass message bottles, though he favors green glass to send his notes. Inside, he writes about himself, mentions the bottle project and how far past bottles have gone and includes contact information.
The Flint River is pictured in downtown Flint, Mich., on Feb. 4. The city's water problems began when it switched to using the Flint River for its supply in 2014. They were exacerbated by government officials' failure to disclose and stop the leaching of lead and other toxins into the water.
Laura McDermott for NPR
Shelter dog Rohan takes a break from his scent detection trials to play outside. Rohan is one of several dogs training to detect homemade bombs at the Canine Science Collaboratory at Arizona State University.
A neighborhood where many people have left their homes because of a massive natural-gas leak is seen in the Porter Ranch neighborhood of Los Angeles in December.
David McNew/AFP/Getty Images