Canada’s Supreme Court upheld the government’s federal carbon pricing law over the objections of provincial governments that had challenged the plan. The federal carbon tax is a key part of Prime Minister Justin Trudeau’s climate agenda. In its 6-3 decision, the Court described climate change as “an existential threat to human life … caused by greenhouse gas emissions resulting from human activities.” (CBC, New York Times $, Politico Pro $, BBC, Reuters, FT $, Bloomberg $, E&E $)