Order of the National Green Tribunal in the matter of In Re: News Item titled "Nayar river is vanishing - a yatra reveals conservation goes beyond science and policy" appearing in ‘The Down To Earth’ dated 03.06.2025. The original application was registered suo-motu based on the news item titled "Nayar …
Destruction of the Earth's ozone shield due to the release of hydrogen sulphide and methane has been suggested as a cause of mass extinctions during periods of ocean anoxia over the past two billion years. This mechanism does not explain the end-Permian mass extinction, according to simulations with a two-dimensional …
Understanding the composition of the atmosphere over geological time is critical to understanding the history of the Earth system, as the atmosphere is closely linked to the lithosphere, hydrosphere and biosphere. Although much of the history of the lithosphere and hydrosphere is contained in rock and mineral records, corresponding information …
Hydroxyl radicals are often called the "detergent" of the atmosphere because they control the atmosphere's capacity to cleanse itself of pollutants. In this article the researchers show that the reaction of electronically excited nitrogen dioxide with water can be an important source of tropospheric hydroxyl radicals.
More than a hundred people live in cities that fail to meet international standards for air quality. Efforts to improve conditions in these urban areas have usually focussed on reducing emissions of reactive hydrocarbons, nitrogen oxide free radicals and primary and secondary sources of particulate matter.
Aerosols play an integral role in climate by directly scattering or absorbing solar radiation, and indirectly these particles serve as condensation and ice nucleic in clouds. Ice formation in tropospheric clouds is required for snow and most rainfall.
a large part of northern India, including capital Delhi, went powerless due to tripping of transmission lines of the Northern Grid. It first happened on March 8 and then on March 10, resulting in large-scale blackouts and affecting the Northern Railways network. The reason: dense fog, unusual for March. Tripping …
We have all heard tales of frogs, toads and fish raining from the heavens: these are rare events triggered by freak weather. But there are land and water-based life forms that seem to be present in the atmosphere just about all the time. These include algae, fungi and bacteria. What …
The Gulf Stream transports large amounts of heat from the tropics to middle and high latitudes, and thereby affects weather phenomena such as cyclogenesis and low cloud formation. Here the researchers consider the Gulf Stream's influence on the troposphere, using a combination of operational weather analyses, satellite observations and an …
Denitrifying bacteria and hungry plants do sterling work in disposing of the nitrates that we pump into rivers and streams. But as the excess influx goes up and up, the efficiency of removal goes down and down.
Anthropogenic addition of bioavailable nitrogen to the biosphere is increasing and terrestrial ecosystems are becoming increasingly nitrogen-saturated, causing more bioavailable nitrogen to enter groundwater and surface waters. Large-scale nitrogen budgets show that an average of about 20
there has been a 35 per cent increase in carbon dioxide emissions worldwide since 1990. Inefficient fossil fuels have contributed to a 17 per cent increase in carbon dioxide emissions and an 18 per cent loss in the absorption capacity of sinks, oceans for example. Scientists associated with the Global …
A P MITRA (1927-2007) In the early 1990s, the US Environmental Protection Agency had come out with a report incriminating Indian rice fields of emitting 38.6 million tonnes of methane per year and thus adding to global warming. A P Mitra, the then director general of the Council of Scientific …
