That's true. There's been multiple ice ages over the eons, not to mention shifting continents, and new species radically changing the landscape (the land used t

That's true. There's been multiple ice ages over the eons, not to mention shifting continents, and new species radically changing the landscape (the land used to be dominated by giant mushrooms, before plants came along). That being said, although climate and the makeup of life on earth changes on its own, and can greatly change over time, the big difference here is how fast this is happening. I feel quite confident that humans will never kill all life on earth, because life is very adaptable and resilient. However, rapid climate change could result in the loss of a huge amount of the biodiversity that exists now. Many species will die, and be replaced with more resilient ones. I think what we're also likely to see, is that some of the most adaptable animal species are small animals (eg: rodents) and insects, things that are typically considered invasive species. Larger animals don't reproduce as fast, and there aren't as many, so they have a smaller gene pool that doesn't recombine as rapidly as with animals that can produce large amounts of babies every year. That makes them way more vulnerable to being killed off by climate change. So, yeah, I hope you like cats, rats, possums, mosquitos and cockroaches.