evidence: There are both natural and anthropogenic (human-generated) climate forcings that have the potential to explain the rise and fall of carbon dioxide (CO2) levels and global temperatures. To be clear right up top, it's human activities -- and not natural forcings -- that have resulted in the increased atmospheric greenhouse gas levels that are the real culprit behind the climate crisis. [...] Another natural forcing is the variation of solar activity. But the fact that Earth’s recent warming trend does not correspond to solar output or the amount of solar energy that reaches our planet, we know that the sun is not causing climate change. [...] Now that we know anthropogenic greenhouse gases are responsible, we need to do everything in our power to reduce that burden on the planet.