Leading figures in the Vote Leave referendum campaign to take Britain out of the EU have links to a controversial climate-skeptic think tank and question the science behind global warming. The group’s three leaders, Boris Johnson, Michael Gove and figurehead Lord Nigel Lawson, have cast doubt over man-made climate change, which is backed by most of the world’s credible experts.Lawson founded the Global Warming Policy Foundation in 2009 and is a noted climate skeptic. Both the foundation, which broke UK Charity Commission rules for anti-climate bias, and Vote Leave share rich donors. Gove — who tried to stop climate change...