Malaysia’s Petronas has cancelled plans to build the Pacific Northwest LNG plant on Lelu Island near Prince Rupert, B.C., in a move seen as a major setback for B.C.'s LNG dreams and as a major win for those concerned about climate change and salmon habitat.

The project would have involved increased natural gas production in B.C.’s Montney Basin, a new 900-kilometre pipeline and the export terminal itself.

Here’s what you need to know about Tuesday’s announcement.