The increase of carbon dioxide (CO2) in the atmosphere is coursed by an increasing use of fossil fuels; natural gas, oil and coal. This has so far resulted in an increase of the global surface temperature of the order of one degree. In year 2000 IPCC, Intergovernmental Panel on Climate Change, released 40 emission scenarios that can be seen as images of the future, or alternative futures. They are neither predictions nor forecasts and actual reserves have not been a limited factor, just the fossil fuel resource base. This paper is based on realistic reserve assessments, and CO2 emissions from resources that cannot be transformed into reserves are not allowed. First we can conclude that CO2 emission from burning oil and gas are lower then what al the IPCC scenarios predict, and emission from coal is much lowers then the majority of the scenarios. IPCC emission scenarios for the time period 2020 to 2100 should in the future not be used for climate change predictions. It’s time to use realistic scenarios. Climate change is current with more change to come, and furthermore, climate change is an enormous problem facing the planet. However, the world’s greatest problem is that too many people must share too little energy. In the current political debate we presumably need to replace the word “environment” with “energy”, but thankfully the policies required to tackle the energy problem will greatly benefit the environment.