Day 343 of 365
December 9
🌍
Geography Volcanic Winter
Large volcanic eruptions can inject enough material into the stratosphere to cool global temperatures. The 1815 Tambora eruption caused the 'Year Without a Summer.' A supervolcanic eruption could trigger crop failures worldwide. Yellowstone's caldera is a dormant supervolcano.
💡 Did you know?
The Toba eruption 74,000 years ago may have reduced human population to just 3,000-10,000 individuals!
Take Knowly with you
Get daily lessons, create your own, and build your personal wisdom library
Download for iOS