There's more than one climate that's changing. A London court has ruled that the British government illegally permitted Heathrow Airport's plans to build a third runway. The decision is a major win for environmental groups, who convinced the appeals court that authorities had neglected to consider Paris climate accord commitments when they approved the increase in Heathrow's capacity.
Can the airport ever expand? It can, the court ruled, but only if it complies with the U.K.'s policy to limit emissions that cause global warming.
OZY profiles the climate scientist taking the Southern Ocean's temperature.