A massive volcanic eruption in Tonga in 2022 was so powerful it changed atmospheric conditions worldwide for months. Important Details: • The eruption came from the Hunga Tonga–Hunga Haʻapai volcano. • It sent ash and gases over 50 km into the atmosphere. • Released an unprecedented amount of water vapor into the stratosphere. • Water vapor acts as a greenhouse gas, trapping heat. • Scientists observed measurable atmospheric changes for months. • Shockwaves circled Earth multiple times. • Consid