If all the Oreo cookies ever sold were stacked on top of one another, they would be as high as 13.3 million Sears Towers.

Around three quarters of the increase in CO2 levels from human activity over the last 20 years is from the burning of fossil fuels. The rest is made up largely of land use changes such as deforestation.

The first MTV video was "Video Killed the Radio Star" by the Buggles.

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