The Colorado Oil and Gas Association sued the two cities, and lower courts overturned the local restrictions - but cities and environmentalists are fighting back.
Some 437 companies factored in carbon pricing in 2015, nearly triple the 150 companies from last year, as climate change becomes part of mainstream business decision-making.
First Nation to claim title to Lelu Island and Flora Bank,where the Pacific NorthWest LNG project will be built - meaning province would need their consent.
Provinces look to green power future worth billions - surging ahead with solar, wind, biomass, and hydro development that is now powering hundreds of thousands of homes.