[willcipriano]

> as far as we can tell.

We can't tell very far.

[bryanlarsen]

Uncertainty makes it even more important that we don't change the climate.

[ThunderSizzle]

Climate changes, and you can't change that. Whose to know if its because of you or because of nature?

[wolverine876]

> Whose to know if its because of you or because of nature?

There is a lot of research over decades into that very question, and it overwhelmingly points to humans as the main cause.

[bryanlarsen]

If the rate of change is unprecedented, one answer is highly likely.