A volcano has erupted in Iceland spewing out streams of bright yellow and orange lava - the latest in a string of volcanic events in the region in recent years. Iceland has seen about 12 eruptions since volcanic systems on the Reykjanes peninsula - close to the capital Reykjavik - became active again in 2021.

A large sulfur dioxide gas cloud is blowing toward Keflavík International Airport. Authorities have told people nearby to stay indoors and keep their windows shut as pollution levels rise. Despite this, flights are running normally and the airport remains open.

The concept isn’t hypothetical. Tephra layers in Icelandic peat cores show that eruptions soared six-fold between 12,000 and 10,000 years ago —exactly when