... Extreme summer heat during baseball season is not only making games uncomfortably hot and sweaty for fans in the stands — it’s also posing a danger to the health of players and changing the physics of the sport. Since 1970, human-made climate change has driven up average summer temperatures in Chicago by 2 degrees, according to the climate science nonprofit Climate Central. That lines up with an average increase of 2.8 degrees across 26 Major League Baseball home cities in the United States — except Los Angeles. The home of the Angels and Dodgers has had no measurable change...