Human beings are just one species in the many ecosystems that make up the planet's biosphere. We cannot exist without those other species. Our understanding of the interconnections is extremely poor (see: "Half Earth" by E.O. Wilson). We are on track to change the climate so abruptly that the species we depend on will not adapt quickly enough. Jellyfish, for example, might thrive. Large mammals like ourselves will not.

Let me reiterate: If these other forms of life go extinct, homo sapiens will go extinct. What point is there in air conditioning if agricultural yields plummet over a huge portion of the earth's surface?

Consider birds for a moment, because they are familiar to most people and widespread. Bird populations have decline by a third during my father's lifetime. This is a multi-factor problem, but we know climate change and sea level rise leads to excess migratory bird mortality.

For more, see: https://wwnorton.com/books/9780393608908