Many Americans may not know it, but the biggest issue in the US election is global climate change. That's because it will hurt the lives of all Americans (with many already affected) and leave the legacy of a disastrous country for their children. And that’s because atmospheric CO2 (the amount of carbon dioxide already in the atmosphere) from burning fossil fuels is at a 23-million-year high and accelerating — increasing at a faster and faster rate. While the Republican Trump administration has opened up America for more fracking, neither presidential candidate has a plan to stop burning fossil fuels.