Not only will sea levels rise flooding most of our big cities which are at sea level it will also flood much of our fertile farmland.
The high temperatures will make large areas of the world uninhabitable. There will be a mass migration of billions of people.
Biodiversity is being hit hard. We are causing mass extinctions and this will rebound on us. We are part of this great food web.
The weather will be greatly affected leading to droughts, floods, fires, storms and hurricanes.
The social tensions and massive disruption, shortages of water and food, are going to cause enormous social tensions.
Unless we tackle this on a global scale we are going to be in huge trouble.