Humans making it to other habitats beyond Earth will likely set off new explosions of diversity (in geological time) than another reset on Earth. In contrast,

Humans making it to other habitats beyond Earth will likely set off new explosions of diversity (in geological time) than another reset on Earth. In contrast, if Earth life doesn't achieve the ability to colonize other bodies, it is doomed to have diversity of zero once the Sun expands, if a global natural disaster doesn't kill all life before then.