Indianapolis Zoo

Judy Palermo/Indianapolis Zoo

Voluntary conservation farming practices are measurably decreasing nutrient pollution in the Mississippi River Basin, and this good news: from the Midwest, all the way down the Mississippi River in the Gulf of Mexico. As Indiana Public Broadcasting’s Nick Janzen reports, the Indiana trend in conservation is reducing the pollution that creates harmful algae blooms and the gulf’s dead zone.

The Indianapolis Zoo, as part of the dolphin exhibit, has a video of dolphins swimming in the Gulf of Mexico. They’re swimming near a boat, pushing air through their blowholes.