Many artists focus on environmental issues in their work. Our planet’s failing health has become a go-to theme in contemporary art. Belmont photography and digital imaging professor Teresa Van Hatten-Granath walks the talk when it comes to green works. She started The Green Bag Lady as a side project in 2008 and has since given out more than 18,000 green shopping bags to environmentalists around the world. Her latest show, Pristine to Extreme, Plastic in Our Oceans, documents her journey to South America and California to draw attention to pollution. Van Hatten-Granath boarded a research boat with a team of scientists to assess the levels of toxic waste in the waters off Chile and in the Chilean fjords. They discovered the water was essentially pure. She then went to California to document beaches polluted with plastic waste. The show juxtaposes images from both trips for a powerful message about our planet’s resources.