Ozone hole could slightly warm Earth

Last Updated: Friday, August 9, 2013, 10:55

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.

Lethal gamma-ray may soon hit Earth

Last Updated: Wednesday, May 29, 2013, 12:22

A lethal gamma-ray burst from a star about 8000 light years away could hit earth and possibly wipe out a quarter of our atmospheric ozone, astronomers have revealed.

Delhi heat increases toxic ozone pollution

Last Updated: Friday, May 24, 2013, 21:53

There is more to the sizzling heat in Delhi than rising temperatures. Scientists have found unusually high levels of toxic ozone in the city in the past two weeks.

NASA finds cause of 2011 odd Arctic ozone `hole`

Last Updated: Tuesday, March 12, 2013, 16:13

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 hole over Antarctica smallest in last decade

Last Updated: Saturday, February 9, 2013, 10:48

Satellite images show that the recent ozone hole discovered over Antarctica was the smallest seen in the past decade.

`Ozone thinning has changed ocean circulation`

Last Updated: Friday, February 1, 2013, 16:48

A hole in the Antarctic ozone layer has changed the way waters in the southern oceans mix, which scientists say could impact global climate change.

Gas that triggers ozone destruction found

Last Updated: Monday, January 14, 2013, 12:49

Scientists showed that the reaction of iodide with ozone leads to the formation of both molecular iodine and hypoiodous acid.

Antarctic ozone hole shrinks to 2nd smallest in 20 yrs

Last Updated: Thursday, October 25, 2012, 14:09

Scientists attribute the change to warmer temperatures in the Antarctic lower stratosphere.

Ozone layer recovery to take 40 years: Experts

Last Updated: Saturday, September 15, 2012, 09:43

The ozone layer outside the Polar regions will take 40 years to recover to its pre-1980 levels, the World Meteorological Organization (WMO) said Friday.

`Montreal Protocol most successful on ozone layer protection`

Last Updated: Thursday, September 13, 2012, 20:41

The government today termed the Montreal Protocol as the "most successful" treaty on ozone layer protection which could serve as a model for cooperation on issues related to climate change.

Severe Arctic ozone depletions could occur again

Last Updated: Saturday, January 14, 2012, 15:58

With continuous global climate change, scientists fear that another record Arctic ozone similar to that during the winter of 2010-11 could occur again.