The Jackson Hole-based festival brought outdoor recreationists and conservationists together to tackle big issues.
The 24-year-long controversy over plans to construct a ski resort in British Columbia’s Jumbo Valley is hitting the big screen.
Presidential candidates tweet their reactions to Obama's rejection of Keystone pipeline.
Obama’s pipeline rejection a huge win for citizen action.
With oil prices in the basement and the Obama administration poised to cancel Keystone XL, pipeline builder TransCanada tries to stall.
New literary revisionism might make the seer of Walden Pond more relevant to readers today.
Civilian drones interfere with aircraft fighting wildfires in California while Australians spot an albino humpback whale.
Support a strong climate change agreement from anywhere on this National Day of Action.
Sierra gets a quarterly infusion of energy, optimism, and talent.
Iberdrola Renewables and Amazon Web Services break ground in an empty field in rural North Carolina.