Effects - NASA Science
Takeaways Earth Will Continue to Warm and the Effects Will Be Profound Global climate change is not a future problem. Changes to Earth’s climate driven by increased human emissions of heat-trapping greenhouse gases are already having widespread effects on the environment: glaciers and ice sheets...
climate.nasa.gov
This is very real. Scientist have been predicting these things for a long time. We are beginning to see many of them happen.
I really expect the next real crisis will be the availability of drinkable water. The struggle will cause economic chaos and, in some cases, wars.