The U.N. say the ozone layer is healing - Cesar Galvan

The Earth's ozone lyaet is finally healing from damage caused by aerosol sprays and coolants, the U.N reported.
The protective ozone layer dad been thinning since the 1970's.
Since then scientists raised awareness and ozone depeting chemicals had been greatly reduced.
Though ot is not comepletly healed scientists say it could be completely gealed by 2030.