The facts are these: The climate of our planet is changing at a pace unlike anything seen in the natural fluctuations traced across geological records, and scientists have overwhelmingly traced this global warming trend to human activity.
Unless you’re a supercomputer, you’ll find it virtually impossible to keep an eye on every single indicator of climate change. Here are a few that scientists use to monitor the planet:
For more, check out this story on how we know climate change is happening—and that humans are causing it.
CO2 in the atmosphere
Global Mean Sea Level (GMSL)
Sea Surface Temperature (SST)
Arctic and Antarctic Sea Ice Extent