Feedback mechanisms seem to exist as the equal and opposite reaction to this planet’s absorption of solar radiation. The ocean being blue and absorbing more light energy as heat than the white polar ice makes sense given what I learned in physics class where I was asked a question about what color should the sail on a solar powered sailing ship in space be to go faster. http://climate.nasa.gov/nasa_role/science/ I answered black because how should I know how to make a theoretical spaceship? Turns out the answer was white because it would reflect the light more and make this space ship go faster.

Some people think that the sun’s activity level has changed and that’s what’s leading to global warming. While it’s true that sunspot cycles do contribute, they don’t happen nearly often enough, (only eleven years at a time) to be the biggest or most likely explanation for the planet getting warmer. When the increase in temperature corresponds to when humans first started burning fossil fuels and the fact that as our sun gets older, it will get less active and eventually die. https://www.aip.org/history/climate/solar.htm