As far as I know the only true renewable source of energy is coal made from trees. All other energy sources require materials that aren't renewable in order to access unless you are doing something like a solar still. <br><br>If we are going by cleanliness, than I think nuclear is probably one of the cleanest now because Im not gonna get into hydro, or geothermal. Solar and wind are not as clean as people would like to have you think, because of the materials and processes required to make them. There is also the subsequent waste caused by them such as batteries. <br><br>I honestly think we are getting to a point where we are on the verge of turning oil and coal into a cleaner energy source than solar and wind. The reason I say this is because we are on the verge of using the pollutants from those energy sources to be recycled into actual products or to be reused as energy. Climate activists are worried about things like carbon in the air, but what happens when we start developing processes that suck carbon out of the air in order to produce carbon based products? I would imagine a coal power plant would then turn into something similar to a giant distillery, whose purpose is to produce power while simultaneously being used harvest carbon. <br><br>I think this is especially true considering we are starting to more heavily rely on products produced from carbon such as carbon fiber. I think we will actually get to a point where the demand for carbon will actually reach a point where they will be intentionally trying to increase carbon emissions to produce more for consumption.<br><br>Whatever the case, I always reach the same conclusion, wind and solar are not the answer to solve climate change. At most you should use it if you want to save money on energy cost in the long term. I don't believe you're saving the planet by switching to it. If anything you are probably making a bigger footprint had you just stuck with fossil fuels.,(reply>), Lol do you think coal is the same as charcoal? Hahahah…. Coal is a fossil fuel, its mined, from Carboniferous deposits in sedimentary rock….<br><br>And yes nuclear, is the solution.