Things that can destroy Earth with C

• Comet

  A big comet impact could wipe out life globally.

• Climate change

  Runaway climate change could collapse civilization.

• Catastrophe

  A global catastrophe could wipe out civilization.

• Cyclone

  Powerful storm; in theory could devastate regions

• carbon emissions

  Greenhouse gases driving warming; could trigger runaway climate change.

• Coronavirus

  Deadly virus; in a worst case could cause near‑extinction.

• Cataclysm

  Broad term for world-ending disaster, fits well.

• Cosmic rays

  High-energy bursts from space can sterilize planets.

• Corona Virus

  Pandemic virus type; in theory could be extinction-level.

• Car pollution

  Runaway emissions can trigger climate catastrophe.

• Car emissions

  Car emissions drive climate change, can wreck biosphere

• Chemical warfare

  Chemical warfare could escalate to global extinction

• Conflict

  Global conflict can escalate to nuclear doom.

• Cold war

  Cold War nearly triggered nuclear annihilation.

• Core

  A collapsing core could unmake the planet.

The words in the list Things that can destroy Earth with C come from players of the word game Categories game.