As Xi Jinping arrives in the United States this week for a state visit, China’s advances in artificial intelligence will be in the air. Less discussed: China’s economy in its worst shape in decades.

© Dongyan Xu

As Xi Jinping arrives in the United States this week for a state visit, China’s advances in artificial intelligence will be in the air. Less discussed: China’s economy in its worst shape in decades.

© Dongyan Xu

Oil-rich Guyana is enjoying red-hot growth. But the boom is magnifying tensions over corruption, inequality and strained ties with Venezuela.

© Cesar Rodriguez for The New York Times