Introduction Global warming has emerged as one of the most important problems facing the international community in the 21st century. For decades, human beings engaged in intensive industrial activity will little consideration for the environmental consequences of his actions. These activities have led to changes in the climate due to the accumulation of greenhouse gases in the upper atmosphere, a condition known as global warming. Global warming has led to many adverse effects including storms, frequent flooding due to a rise in sea levels, heat waves, devastation of plant life, and the spread of diseases. The global community has therefore singled out global warming as an environmental issue that needs to be addressed promptly. One of the solutions proposed has been to replace fossil fuels with renewable energy sources. This paper will argue that since fossil fuels have been the primary contributors to the global warming problem, a switch to renewable energy sources will help to mitigate global warming and possibly even reverse the damages done so far. Fossil Fuels and Global Warming There is unanimous agreement that global warming is a problem that requires a universal solution. Carbon dioxide has been earmarked as the Green House gas (GHG) most responsible for this phenomenon. This implicates fossil fuels since CO2 is the main byproduct of fossil fuel combustion. Ferrey reinforces this statement by documenting that burning fossil fuels contributes 81% of CO2 emissions in the world (73). Arguments have therefore been made that reducing fossil fuel use will result in lower CO2 emissions and therefore mitigate global warming. However, this argument faces opposition from proponents of fossil fuels who claim that renewable energy sources will not offset the global warming problem. A Case for Renewable Energy Sources Renewable energy sources will provide clean power and therefore reduce the amount of GHGs emitted by the present power generation technologies. Reliance on fossil fuels for power generation has caused a notable acceleration in carbon emissions since 1990. Ferrey documents that the reliance on coal resources for power generation in developing countries has led to an in CO2 emissions by about 40% (70). Electric power generation is projected to be the main contributor to GHG emissions in the near future, as developing countries turn to fossil fuels for their power generation. Alternative means of producing electricity will therefore have positive environmental outcomes. A substantial change to renewable technology will have a marked impact on the environment since it will significantly reduce the greenhouse gas emissions emanating from the power sector. This is a critical point considering that the International Energy Agency (IEA) has forecast that the world demand for energy will grow by 60% by the year 2030. Renewable energy sources for vehicles will improve the air quality in all countries and therefore mitigate global warming. The growth in fossil-fuel powered automobiles has been responsible for the high CO2 emissions experienced in many parts of the world (Rich and David 1). Renewable energy sources such as hydrogen can be used to power vehicles and reduce the negative environmental impacts, including global warming, that