The United Nations agency dealing with weather and climate today reported that ozone loss over the Arctic has reached an unprecedented level this spring owing to the continuing presence of ozone-depleting substances and extremely cold temperatures. Data shows that the Arctic region has suffered an ozone column loss of about 40 per cent from the beginning of the winter to late March, according to a news release issued by the World...

The European Commission’s decision to exclude two key ozone-depleting gases from the purview of carbon trading from 2013 would have negative implications for global warming. The two industrial emissions marked for this purpose are Hydrofluorocarbon-23 (HFC-23), essentially trifluoromethane, and nitrous oxide. These are highly potent greenhouse gases (GHGs) that together account for the bulk of the trade under the EU’s emission trading system, which is, by far, the world’s largest...

International efforts to protect the ozone layer shielding life on Earth from harmful levels of ultraviolet rays have stopped additional ozone losses, potentially averting scores of millions of cases of skin cancer and eye cataracts, according to a new United Nations report released today. At the same time they have helped to mitigate the global warming greenhouse effect. “Today’s report underlines that action to protect the ozone layer has not only...

Biotech technicians neither have the knowledge of gene ecology nor the expertise in multiple disciplines.    After the minister of environment Jairam Ramesh announced a moratorium on Bt brinjal, article after article in the media has denounced the decision, saying such decisions should be left to ‘scientists.’ The issue is however not science vs anti-science. It is reductionist science vs systems science. The moratorium took into account the best of science. Many...

That the hole in the Earth’s ozone layer is slowly mending is considered a big victory for environmental policymakers. But in a new report, scientists say there is a downside: Its repair may contribute to global warming. It turns out that the hole led to the formation of moist, brighter-than-usual clouds that shielded the Antarctic region from the warming induced by greenhouse gas emissions over the last two decades, scientists...