Newsom has recently copied Trump’s social media style, firing off missives with all capitals and lots of exclamation-points, trolling, name-calling and grandiose statements. Newsom’s mocking posts have led to a surge in his social media engagement.

In their press release announcing the Danish-Californian partnership, Newsom officials cited several other examples of collaboration between the state and countries, which included Sweden, Mexico and China.

Chris Field, director of the Woods Institute for the Environment at Stanford, said climate partnerships between California and other countries date back at least to the George W. Bush administration, if not longer.

“International collaboration is going to continue to be an important part of tackling the climate crisis and with the lack of engagement of the federal government, states have an opportunity,” Field said.

“We in California and countries around the world are trying to figure out how to build the economy that’s going to run us through the 21st century,” Field said. “Relevant technologies and agreements like this really help lay the foundations for those technologies being built.”