Extinction event
Biodiversity collapse catastrophe
An extinction event is a period in Earth's history when a significant proportion of species die out in a geologically short time.
The most famous is the asteroid impact that ended the dinosaurs 66 million years ago.
Scientists have identified five major extinction events; some argue we're now in a sixth, driven by human activity.
The Permian extinction event wiped out ninety percent of marine species.
- volcanic eruptionsExplosive magma discharge from peaks
- nuclear winterWartime cooling catastrophe
- ice ageEra of massive glaciation
- ocean acidificationSeawater pH dropping from CO2
- dead zoneArea lacking signal coverage
biodiversity loss · endangered species · dodo bird · population decline · food chain collapse · deforestation · bolide · overfishing · K-Pg boundary · mass die-off · pollution · sea level rise · nuclear fallout · habitat fragmentation · point of no return · greenhouse gas emissions · asteroid impact · wildlife corridors
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