[Yo-Yo]

If the supervolcano under Yellowstone ever does blow, then we won’t have to worry about Globull Warming anymore.

We will have to worry about a “Nuclear” Winter, with all of that ash and debris blotting out the Sun for months if not years to come.

[RayChuang88]

If the Yellowstone caldera erupts again like the last time it did so, we may be talking about essentially complete darkness for nearly TWO years. That type of climate change would be enough to actually trigger off an ice age, because even after the ash blows away in about two years, there would be so much snow and ice on the ground at the higher latitudes that it may never melt for many years afterwards.