Ozone layer 'no longer disappearing’

• UN scientists have confirmed that the ozone layer is no longer disappearing and could be back to full strength by the middle of this century.
• The phasing out of nearly 100 substances once used in products like refrigerators and aerosols has stopped the ozone layer being depleted further, although it is not yet increasing.
• And it claimed that efforts to protect the ozone layer have averted millions of cases of skin cancer worldwide.
• Ozone in the stratosphere is important because it absorbs some of the Sun's dangerous ultraviolet radiation