Existential risk

Planet Earth will survive.

Humanity will evolve.

Orders of magnitude, not specific numbers:
 * Planet Earth 4 billion years
 * Humanoid apes 4 million years
 * Modern civilization 4 thousand years

We are a spec of dust in a cosmic scale.

See Vision and Plan B.

Related

 * https://wiki.lesswrong.com/wiki/Existential_risk
 * https://rationalwiki.org/wiki/Existential_risk
 * https://en.wikipedia.org/wiki/Global_catastrophic_risk