CO2 levels make largest annual leap in 56 years

fossil fuel emission

A strong El Nino and fossil fuel emissions caused the record increase, said the National Oceanic and Atmospheric Administration (Credit: Pixabay)

The last time the Earth saw such a sustained increase was over 11 millennia ago, says US agency

March 11, 2016 — Atmospheric concentrations of carbon dioxide last year rose by the biggest margin since records began, according to a US federal science agency .

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