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The average global temperature between March and May this year reached 1.5°C above midrange temperatures in the early 19th century. Global heating deniers claim the variation in temperature since the industrial revolution is not unusual for temperature fluctuations during the Holocene – the 11,700-year era since the last glaciation. They claim, therefore, that anthropogenic carbon emissions cannot be considered a major contribution to the heating of Earth’s oceans and atmosphere. Protest at Coal Power Plant Niederaussem in Germany © Daniel Müller / Greenpeace. On May 15, this year, both the Scripps and NOAA labs at Mauna Loa Observatory in Hawaii reported concentrations over 415.6 parts pe... Full story

20 July