Future air quality may put plants at risk
Future air quality may put plants at risk

By 2050, cumulative exposure to ozone during the summer will be high enough to damage vegetation, estimates an international research team. (13:30)

UN chief cites Montreal Protocol to address climate challenge
UN chief cites Montreal Protocol to address climate challenge

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.

Fragile ozone layer shows first sign of recovery: UN

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.

Ozone layer on track to recovery: UN report
Ozone layer on track to recovery: UN report

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.

India's ozone pollution destroys crops enough to feed 94mn people annually
India's ozone pollution destroys crops enough to feed 94mn people annually

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.

Mysterious source of ozone-depleting chemical baffles NASA

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.

Ozone peaked to dangerous levels in Delhi: Study

Even as residents in Delhi continue to battle the soaring temperature this summer, the Ozone has also peaked to dangerous levels in the national capital.

Climate changes put the freeze on elephant seal births

More ice means fewer elephant seal pups, according to Australian scientists studying breeding colonies on Macquarie Island near Antarctica.

Climate change to undermine world ocean systems by 2100

Scientists have found that no corner of the world ocean will be untouched by climate change by 2100, with the sea experiencing the simultaneous effects of warming, acidification and oxygen depletion.

New device can detect dangerous ultraviolet light

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.

India resisting US pressure for draft on phase out of HFCs

India was having differences with the US and other developed countries over drafting a proposal in the Montreal protocol on substances depleting the Ozone layer.

India to mark Int`l day for preservation of Ozone Layer

The 19th international day for preservation of Ozone layer will be observed on September 14 with the theme "a healthy atmosphere, the future we want".

Ozone layer`s depletion will cease in time: Academic

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.

Ozone hole could slightly warm Earth

A new computer-modelling study has suggested that the ozone hole could actually have a slight warming influence, but it is only due to its effect on winds and not temperatures.

NASA finds cause of 2011 odd Arctic ozone `hole`

A combination of extreme cold temperatures, man-made chemicals and a stagnant atmosphere caused a significant hole in the Arctic ozone layer in 2011, NASA has found.

Ozone not healing

Scientists worldwide are looking for evidence that the ozone layer is beginning to heal, but this year`s data from Antarctica does not hint at a turnaround.

Venus has an ozone layer too

An ozone layer high in the Venusian atmosphere has been discovered by a European Space Agency (ESA) probe.

Gamma-ray bursts `could end life on Earth`

Gamma-ray bursts, massive explosions on the other side of the galaxy, could end life on Earth, say planetary scientists.

Venus has ozone layer too

A spacecraft orbiting Venus has discovered an ozone layer high in the planet’s atmosphere.

Asteroid strike in oceans can destroy ozone layer: Study

An asteroid splashdown in one of the Earth`s oceans could trigger a destructive chemical cycle.