Step 1. Please watch the TED talk by Rob Harmon discussion about markets helping keep streams in Montana flowing (Duration – 8 minutes 47 seconds) Rob Harmon TED talk (Links to an external site.) https://www.youtube.com/watch?v=YeJhVtJKJU8 Step 2. Virtually explore your own neighborhood, town, or city and find an example of a negative externality. Step 3. […]