Geography
Volcanic Ash Dispersal Across Continents
Quick fact
The 1991 eruption of Mount Pinatubo in the Philippines sent ash and gases into the stratosphere that circled the globe within three weeks, temporarily cooling global temperatures by about 0.5°C.
Why this is interesting
Imagine a volcano in Iceland grounding flights across Europe, or ash from a Pacific eruption reaching North America. How can solid rock debris travel thousands of kilometers from its source?