"Catastrophic": doesn't have to primarily impact humans, but must semi-permanently change some part of the world as we know it.

"Cascading": must trigger secondary disaster(s) or have significant indirect effects.

"Natural": the inciting event is not directly done by human actions or technology (e.g., AI, nukes), but can be triggered by anthropogenic effects (e.g., climate change).

"Disaster": must have a primarily negative outcome (loss of life, ecological damage, societal collapse, etc.).

Examples that would qualify for YES:

• Temperature anomaly in the antarctic causes shelf detachment and global sea level rises, causing mass population displacement.

• Complete collapse of an ecosystem (acidification finishes Great Barrier Reef die out, geological disaster causes widespread Amazon Basin toxification, etc.).

• Wildfires wipe out a major world city.

• The Tohoku earthquake of 2011 that caused the nuclear plant disaster in Fukushima would qualify if it happened today.

Examples that WOULDN'T trigger a YES resolution:

• AI wipes out all life

• A volcano creates a new island

• Orcas destroy all boat rudders on the planet