> What evidence is there that there can't be more crop production at more northern, theoretically then warmer, altitudes? A common misunderstanding of global w

> What evidence is there that there can't be more crop production at more northern, theoretically then warmer, altitudes? A common misunderstanding of global warming is the belief that all points on Earth will see their temperature rise by the same amount. The average temperature will rise, but many regions of Earth will actually see their temperature go down. Unfortunately, those regions are already not particularly warm, like Antarctica. Northern regions of Earth have their temperature heavily tied to the amount of sunlight they receive. While they will indeed get warmer compared to now, they will still be cold, and there is nothing that can be done about the six months of night time. Going to Siberia is not the answer, no matter how much you like Mr Putin. https://upload.wikimedia.org/wikipedia/commons/e/e6/Projected_change_in_annual_mean_surface_air_temperature_from_the_late_20th_century_to_the_middle_21st_century%2C_based_on_SRES_emissions_scenario_A1B.png https://upload.wikimedia.org/wikipedia/commons/e/e6/Projecte... As for rising sea levels: for obvious reasons, settlements near the sea are common. Rebuilding all those cities will be a tremendous cost. Human migration will also be politically straining, which may cause a part of the US to secede. Immigration tends to irritate people for some reason. A famous US president was recently elected thanks to that resentment. https://upload.wikimedia.org/wikipedia/commons/5/5c/6m_Sea_Level_Rise.jpg https://upload.wikimedia.org/wikipedia/commons/5/5c/6m_Sea_L... As for wildlife, rapid changes in temperature are correlated with mass extinction according to the fossil record. In fact, we are already currently undergoing a mass extinction, which is expected to go on: https://en.wikipedia.org/wiki/Holocene_extinction#Global_warming https://en.wikipedia.org/wiki/Holocene_extinction#Global_war....