Sea Level Rise
As usual, it's old news too, but on the contrary, this is an example of how science is self-correcting. This is a concept that wingnut sceptics and their madcap followers running on venom and blind faith will never get.
*Global sea level rose about 17 centimeters (6.7 inches) in the last century. The rate in the last decade, however, is nearly double that of the last century.