It's well known in other circles but as the climate warms there will be a huge band within the tropics where the humidity + temperature means you cannot live there without intense air conditioning and staying indoors for months OR just dying (wet-buld temperature which also may be lower than previously assumed). This obviously applies to flora and fauna as well, not like complete mars-ification total biomass extinction but animals and a lot of plants would perish. If you look on a map you'll see the band between the tropics also has probably the majority or a huge plurality of human population, South China, Nigeria, South India, South Asia in general - billions will have to leave or die, we aren't ready for this type of human migration and the climate eco fascists that ARE aware of it think it will be possible to police that amount of human migration or even eliminate it. And that's year round wet bulb temps, it'll be seasonal a few latitudes either side. If you're 30 or younger, by the time you're 60 there will be regular heat waves that kill seniors every year in every country. This is your future, maybe we can stem the tide a bit with radical action today but the damage is also done and climate takes geological time scales to readjust.