If all the gold sitting in the oceans and seas were mined, every person on this plant would get about 20 kilograms of gold each.

An elephant can live up to the age of seventy, or in some cases even more.

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.

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