The concentration of carbon dioxide at Mauna Loa Observatory in Hawaii for three million years, not at the level seen, scientists said on Monday reached – a terrible warning about the impact of human activity on the planet. The observation sensors recorded content of carbon dioxide of 415 parts per million (ppm) on which CO2 per 1 million molecules of the gas 415 from the atmosphere. CO2 – emitted that if we like coal, oil and natural gas burn fossil fuels – is a greenhouse gas that traps heat in the atmosphere, contributing to global warming that climate change unit. The concentration of CO2 was from an average of 2.5 ppm increased in the last decade. But the increase in 2018-2019 should be around 3 ppm, Ralph Keeling, director of Scripps C02 program, which runs Manua Loa Observatory, said in a statement. “Every year it goes like this until we say no ‘should, this should not happen. It is not normal,” said Keeling. “This increase is not only what we do sustainable in terms of energy consumption and in this sense, for the planet.” This is the first time that the gas concentration has exceeded ppm in the history of mankind 415, meteorologist Eric Holthaus on Twitter warned. The last time the amount of CO2 was higher during the period Pliociene 5.3 to 2.6 million years, this was high. At that time, the Earth was a very different place, with a very warm climate. mean sea level was probably higher than 50 ft of forests and to date have grown as far north as the Arctic, says professor of Earth system science at Stanford University NBC.