Climate Central: When the Brazil and Croatia national sides kick off the World Cup on Thursday, the players on the field won't be the only new things since the last time Brazil hosted the World Cup in 1950. Cleats, the stadiums and even the humble soccer ball itself have changed. But even more important than soccer equipment, average temperatures in Brazil for June and July, when the tournament is played, have also changed. And that change has trended upward, just as it has worldwide.
June-July average temperatures...