[just4kickz]

well i mean personally from what i've learned in my environmental studies... there are obviously ice ages and what not that change the global temperature by extreme amounts... and there are also times when the world is simply hella hot... im being vague because i dont remember that much from the class... it was kinda too indepth for me to grasp everything... but anyways on a seasonal scale, levels of CO2 go up and down yearly... but on a global scale its been increasing pretty rapidly... i believe that this era's global warming is man made... i'm pretty sure that temperature increases in the milleniums before weren't as rapid as today's rate.