Sure - it has changed before, and mass extinctions have resulted...

But THIS time it is happening due to our actions and global human civilization is built around a stable climate.

Lets pretend for a moment that humans had nothing to do with the warming we are seeing- don't you think we would be taking serious action to prevent it?

The Earth and life and probably even humanity will survive climate change- but that is not the issue- Human civilization is far more fragile.

Look at the turmoil the refugee crisis is creating in Europe now- THAT IS NOTHING compared to what is coming as large areas become uninhabitable, and coastal dwellers have to retreat inland.

Of course the billionaires and trillionaires will do fine- and they are the ones making the rules.