Latest data shows steep rises in CO2 for seventh year
by Fiona Harvey Environment correspondent from Environment | The Guardian on (#4GFYV)
Readings from Hawaii observatory bring threshold of 450ppm closer sooner than had been anticipated
The concentration of carbon dioxide in the atmosphere has increased by the second highest annual rise in the past six decades, according to new data.
Atmospheric concentrations of the greenhouse gas were 414.8 parts per million in May, which was 3.5ppm higher than the same time last year, according to readings from the Mauna Loa observatory in Hawaii, where carbon dioxide has been monitored continuously since 1958.
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