How the Antikythera mechanism tracked planetary motion

In the nineteenth century, Sri Lanka was a major coffee producer. Then coffee leaf rust spread through plantations, damaging crops so severely that growing coffee became increasingly unprofitable. Planters shifted toward tea, which eventually became the island's signature export. A plant disease helped transform an entire country's agricultural economy.

Despite its small area and high population density, the Netherlands has fertile soil, a mild climate, and intensive agriculture. These conditions support its rank as the world’s second-largest exporter of food and agricultural products by value.