Between 2012 and 2022, Peru's blueberry production rose from under a thousand tonnes a year to nearly 300,000 tonnes. That growth turned the country into the world's second-largest blueberry producer in less than a decade. Blueberries are a crop that needs careful irrigation and cold-season supply, and Peru's coastal farms in the south have suited the export market well. Most of the fruit is shipped to North America and Europe, where demand for year-round berries has grown. Our World in Data uses the figures to show how a single crop can transform a country's agricultural economy in a short time.

Hampi is a UNESCO World Heritage Site in Karnataka, India, with more than 1,600 surviving remains spread over 4,100 hectares. It was the capital of the Vijayanagara Empire from 1336 to 1565. Travellers from Persia and Portugal described it as a prosperous, wealthy and grand city with temples, markets and farms along the Tungabhadra River. By 1500 it was estimated to be the world's second-largest city after Beijing, and probably India's richest at the time. In 1565 a coalition of Muslim sultanates defeated the Vijayanagara Empire, its capital was conquered and destroyed, and the city was left in ruins. Hampi remains a religious centre, with the active Virupaksha Temple at its heart.