The Social Cost of Carbon (SCC) is a metric used to determine the economic value of one ton of greenhouse gas (GHG) emissions. This metric is an important tool for estimating the broad economic impacts of each additional ton of GHG emissions that are released into the atmosphere.

A Colorado watchdog group has filed a federal lawsuit to prevent the construction of the Rocky Flats Greenway due to the risk of plutonium contamination. The Greenway would connect Westminster Open Space to Rocky Flats National Wildlife Refuge.

While plastics have been around for over a century, it was not until 1971 that plastics were discovered in the middle of the ocean. Today, plastic is synonymous with pollution. There is nowhere in the world that plastic has left untouched.