The earth's average surface temperature has risen by about 2.12 since the late 19th century. This change is largely attributable to increased levels of carbon dioxide and other effects of human activities. The damage from this reality can already be felt in things like rising sea levels, more destructive and frequent storms, and devastating wildfires. 

Despite the evidence that global warming will continue to make things worse in the years to come, it can be very hard to motivate people to take action and implement changes to reduce their carbon footprint.