Humanity is in the existential danger zone, scientists warn

Canada Journal: Climate change and high rates of extinctions of animals and plants are pushing the Earth into a danger zone for humanity, said a scientific report card about mankind`s impact on nature. In a new study published in the journal Science, an international team of 18 researchers argue the most important “planetary boundary” is the level of carbon dioxide in the atmosphere, followed closely by the rate of species extinction. The other “planetary boundaries” the planet’s exceeding are the rate of......

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