Evidence of Global Warming

Scientists are supremely confident that we are experiencing human-caused climate change.

This confidence rests on the overwhelming convergence of evidence. The following graphs are a little of this evidence. Millions of measurements of varied phenomena by many scientists are all consistent with the same conclusion.

Evidence of humans causing climate change

According to NASA, sea level is “the yardstick of climate change.” Ocean waters act like the mercury in a global thermometer. The oceans rise as the Earth heats because (2) warming water expands, and (2) melting ice adds water. Our rising sea levels show that our planet is warming.