There's now more carbon dioxide (CO2) in the atmosphere than ever before in human history, scientists have revealed. For the first time on record, monthly average CO2 levels exceeded 430 parts per ...

GENEVA (AP) — Heat-trapping carbon dioxide levels in the atmosphere jumped by the highest amount on record last year, soaring to a level not seen in human civilization and “turbo-charging” the Earth’s ...

CO2 is a natural part of the planet, but too much has tipped the climate scales. Carbon dioxide may be a naturally occurring substance on Earth, but too much of its presence has contributed to global ...