I never understood why this 1.5-2C global temperature is such a big issue when dinosaurs were living with average 15-20C Earth temperature and much higher CO2 levels (you can just google "world temperature history" or "co2 levels history". There were much more plants, diverse wildlife, etc. Having warm Earth is much better than having an Ice age, right? Also higher CO2 levels mean more ingridients for new trees/plants (eventually - food). I'm not trolling but really curious on this PoV and seems that the media is onesided on this topic (higher temperature / CO2 levels - bad and that's it). Noone is looking at it at a diferent angle.
> Climate is always changing. Why is climate change of concern now?
> All major climate changes, including natural ones, are disruptive. Past climate changes led to extinction of many species, population migrations, and pronounced changes in the land surface and ocean circulation. The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt.
> Why be concerned about a degree or two change in the average global temperature?
> A degree or two change in average global temperature might not sound like much to worry about, but relatively small changes in the earth’s average temperature can mean big changes in local and regional climate, creating risks to public health and safety, water resources, agriculture, infrastructure, and ecosystems. Among the many examples cited by the 2018 National Climate Assessment are an increase in heat waves and days with temperatures above 90°F; more extreme weather events such as storms, droughts, and floods; and a projected sea level rise of 1 to 4 feet by the end of this century, which could put certain areas of the country underwater.
The current warm period is happening across the world for the first time. The rate of change is unprecedented and it happens globally. No, heating if a planet is not good, when this also comes with stronger weather extremes, areas where it is impossible to survive and ecological stress that evolution can not deal with.
I can get really tiring in explaining the basics in one of humanities biggest problem over and over again.
The media is reporting what scientists are saying, who thoroughly consider all angles. You don't see it mentioned because it's a hypothesis that was rejected (long ago), with reason.
Hint: The _rate of change_ is critical. Past climate shifts that happened in short order, lead to mass extinction events (like we're participating in now).
If you're truly "really curious" and "not trolling", there's a wealth of information at your fingertips!
Temperature is not the issue. Rate of change of temperature is. World ecosystem can’t adapt that fast without drastic population drops. Ever heard of overshoot?
