In 1976, National Geographic correctly reported that Earth’s temperature varied from 50F to 61F during the span humans occupied the planet, and that most of human existence was typified by extremely cold weather which would not support civilization. (Chicago was under a mile of ice)
But by 2007, National Geographic had completely thrown science and integrity out the window, and was claiming that the planet was a steady 57F prior to the burning of fossil fuels. They also started promoting starving poor people by using food for fuel.
The big question is – who is paying for this massive global warming fraud?