UN Secretary-General Ban Ki-moon has underlined the importance of the Montreal Protocol to address the climate challenge on the International Day for the Preservation of the Ozone Layer, being observed Tuesday.
The ozone layer that shields life from cancer-causing solar rays is showing its first sign of recovery after years of dangerous depletion, a UN study said on Wednesday, in a rare piece of good news on the environment.
The depleting ozone layer is well on track to recovery in the next few decades because of "concerted international action", according to an assessment report by UN Enviornment Programme and World Meterological Organisation.
A new study has revealed that India's ozone pollution damaged millions of tons of the country's major crops, causing losses of more than a billion dollars and destroying enough food to feed 94 millions of people living below the poverty line.
A chemical used in dry cleaning and fire extinguishers may have been phased out in recent years but NASA said Wednesday that carbon tetrachloride (CCl4) is still being spewed into the atmosphere from an unknown source.
Scientists have developed a new device that can detect in just milliseconds a certain type of high-energy ultraviolet light which is powerful enough to break the bonds of DNA and harm living creatures.
The opening in the earth`s stratospheric ozone layer over Antarctica is closing slowly and should recover completely in the later half of this century, though its effect on global climate change is still uncertain.