Human emissions of carbon dioxide will defer the next Ice Age, the BBC reported.

Scientists from University College London, the University of Florida and Norway’s Bergen University calculated that the atmospheric concentration of CO2 would have to fall below about 240 parts per million (ppm) before glaciation could begin.

The current level is around 390ppm. The last Ice Age ended about 11,500 years ago, and it is not entirely clear when the next one should begin.

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