Mauna Loa Observatory captured the reality of climate change: The US plans to shut it down The greenhouse effect was discovered more than 150 years ago and the first scientific paper linking carbon dioxide levels in the atmosphere with climate change was published in 1896.

Data collected by Mauna Loa from 1958 onwards let us clearly see the evidence of climate change for the first time. The station samples the air and measures global CO₂ levels. Charles Keeling and his successors used this data to produce the famous Keeling curve...
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