After Britain's vote to leave EU, it will take time actually pull out of membership. What's already here is uncertainty over ratification of a climate treaty, other steps to reduce carbon emissions, and the fate of British environmental laws.
Investment is needed to help developing nations adapt to climate change and reduce their greenhouse-gas emissions. The head of the UN's climate change process says it's an 'issue of credibility' for advanced nations to step up.
The US Supreme Court ruled on Tuesday to put President Obama's Clean Power Plan on hold. The decision is a blow to the administration and a victory for a group of mostly Republican-led states that have banded together against the plan.