In 1815, the eruption of Mount Tambora in Indonesia made such an impact that it changed much of the world's climate. How exactly do volcanoes do this? | The Economist

🌋 TOO MANY VOLCANOES ARE ERUPTING NOW Indonesia’s Semeru is on high alert, throwing ash columns kilometers into the sky and sending pyroclastic flows down its flanks. Japan’s Sakurajima just blasted ash up to about 4.4 km, cancelling dozens of flights. Fuego in Guatemala is back with explosive activity over the same towns it has killed before. In Ethiopia, the long-dormant Hayli Gubbi volcano woke up after at least 10,000 years, firing an ash plume so high it crossed the Red Sea and drifted ove