So we humans are burning fuel releasing heat and energy into the atmosphere. (Let's not bring problems about global warming into the topic) And, so there is the major source of energy from the sun's radiation which hits on Earth by adding more energy and heat into the system. I know that some of that sun's radiation is gets reflected away by clouds and when it hits Earth's surface. However, there is a certain amount of energy that is transferred to the Earth when it hits the surface which is not reflected. Excluding the part of global warming where clouds impede the reflected radiation to come out (which makes Earth harder to cool down), how Earth cools itself out? We might even skip the part that we humans are releasing energy to the surroundings since the amount of energy supplied by humans might be almost insignificant compared to the sun's radiation i still don't get how the Earth cool itself down since most of the reactions that happens in earth is Exothermic and not Endothermic. Edit: I read that Earth cools itself down by melting the ice on the poles. But doesn't that mean the total energy in Earth will just increase over time regardless?