A THINNING ozone layer has led to mass extinctions in the past and researchers are warning that history could repeat itself as the Earth's atmosphere struggles to recover above major cities.
Ozone layer DECAYING as scientists fear Earth 'heading towards MASS-EXTINCTION'
A THINNING ozone layer has led to mass extinctions in the past and researchers are warning that history could repeat itself as the Earth's atmosphere struggles to recover above major cities.
