The tundra is a vast, flat, treeless Arctic ❄️ region where the subsoil is permanently frozen – or that, at least, used to be the case. A huge study 🗃 that spanned over 3 decades has found that low-lying shrubs, grasses and other plants in the Arctic are getting taller 🌱 due to rising temperatures. The consequences are the following: 1️⃣ Taller plants help make the Earth’s surface darker, allowing the tundra ecosystem to trap more heat from the sun, and start melting💧. 2️⃣ Taller Arctic…