China tightened its grip on the global supply chain for battery raw materials as Tianqi Lithium Corp. struck a deal to take a $4.1bn stake in Chilean rival SQM, the second-largest lithium producer.

The most telling symbol of the modern era isn’t the automobile or the smartphone. It’s the chicken nugget.

Two years ago, Tang Xin had never set foot in Mexico and didn’t know a word of Spanish. While his grasp of the language hasn’t improved much since then, he has built one of the country’s hottest apps.

The majority of roses Americans give one another on Valentine’s Day, roughly 200 million in all, grow here, the savanna outside Bogota, Colombia, summoned from the soil by 12 hours of natural sunlight, the 8,400-foot altitude and an abundance of cheap labor.