List at least one thing an ecological designer considers about a product.

 What substance was responsible for a major ozone depletion in the 1900s? 

In the 1920s, CFCs were invented and widely used because they were not too expensive, and were inflammable. By the 1990s, they were banned because they depleted ozone, and the only place Nature could destroy them was the intense solar radiation in the ozone layer. 

Did you know it's illegal to own only one guinea pig in switzerland?   : )