[tdudhhu]

Disclaimer: I am 100% convinced climate change is real and humans have some influence in it.

My question: do we even know what the baselines are? If we look at the history of the world climate has never been constant. So on one hand I am afraid humans messed up, on the other hand it's very difficult to see if the current climate change is totally caused by humans. Especially now El Niño is causing changes all around the world.

[bryanlarsen]

You're asking the wrong question. There is no baseline, no natural temperature. The "baseline" temperature has and will change over millions of years.

The right question is about the rate of change. If the temperature changes slowly, ecosystems adapt and migrate. If it changes quickly, they cannot.

Changing a degree or two over ~10,000 years appears to have happened relatively often. This causes some species loss, but in general the ecosystem thrives.

Changing a few degrees over hundreds of years is a leading theory of the cause of the Permian-Triassic extinction event, the largest extinction event since the oxygenation of the atmosphere.

Changing a few degrees over decades? We're going to find out.

[holsta]

You don't need our permission to read the literature on ice core drilling and DNA sampling going back 800K - 2 million years.

[silverquiet]

Adding a disclaimer to a denialist "just asking questions" talking point doesn't really convince me of sincerity these days. I suppose it could depend on what you mean by history though. If we look at the history of the world, humans basically haven't existed and I'm thinking probably won't for very long.