Antarctic ozone layer hole keeps shrinking in 2022: NASA, NOAA

Ban on chemicals adopted by Montreal Protocal attributed to gradual ozone layer recovery

Ozone layer recovery may take several lifetimes. But Montreal Protocol saved the Earth

The stratospheric ozone layer absorbs a portion of the ultraviolet radiation from the sun, preventing it from reaching the surface of Earth  

Harare has only 20% of water it needs daily

City council of Zimbabwe capital left with little chlorine to disinfect driking water

Chlorine leak in Mumbai suburb sends 120 to hospital

Unclaimed chlorine cylinders at port trust premises were not neutralised despite warnings