John Kerry goes to China to restart U.S.-China climate talks

HONG KONG — For all their differences, the United States and China have one thing in common: Both their populations are sweating through one of the hottest summers on record. As U.S. climate envoy John Kerry arrived in Beijing for talks with Chinese officials earlier this week, temperatures reached a record of almost 126 degrees Fahrenheit in China's arid northwest. Meanwhile, millions of people across the U.S. are experiencing a relentless heat wave, with more records expected to be broken this week. The stakes could hardly be higher. Experts say that the extreme weather being experienced all over the world…