There is no doubt that greenhouse gas emissions are rising remorselessly. We must sideline the sceptics
On an observatory 11,000 feet high on Mauna Loa, a volcano in Hawaii, a pair of ageing, automated detectors have been churning out details about the make-up of our atmosphere for several decades. This month, they produced their most alarming result to date. They showed that carbon dioxide levels in the atmosphere have touched 390 parts per million – a 40% increase on pre-industrial levels.
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