If the United States reduces carbon emissions before 2080, the trajectory would slow, but not stop.
Bernhardt is a former lobbyist for oil and gas companies.
Muir helped establish Yosemite National Park and founded the Sierra Club.
Sen. Michael Bennet and Gov. John Hickenlooper asked the government to stop plans for oil and gas drilling on habitat for the greater sage grouse.
The City of Colorado Springs will place prominent signs around parks being sprayed with pesticides and weed killer.
The San Francisco-based bank recently made it known that it would no longer be doing business with companies whose main activity is tied to oil and gas from shale or tar sands.
The Trump administration denies that a decision to shrink Bears Ears National Monument in Utah was about energy development. But a Lakewood-based uranium company lobbied the Interior department. A spokesman explains.
"We need to move forward into a future that is rich in both technology and nature," Scott Sampson says during an appearance on Colorado Matters at the Tattered.
Some participants also voiced concerns about potential cuts in federal funding for science and research. Others wanted an opportunity to move science out of labs and academia.