Ozone Layer

Order of the National Green Tribunal regarding disposal of fly ash by the thermal power station run by NTPC, Kanti, Muzaffarpur, Bihar, 12/04/2024

Order of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Dinesh Prasad Chaurasia & Others Vs State of Bihar & Others dated 12/04/2024. The matter related to improper disposal of fly ash by the thermal power station run by National Thermal Power Corporation (NTPC), Kanti, Muzaffarpur, …

Ozone friendly, but toxic

two refrigerants being used to help protect the Earth's ozone layer may lead to liver damage in people, reveals a study. A team of researchers led by Perrine Hoet at the Catholic University of Lounin, Brussels, has confirmed cases of toxic effects in workers exposed to halogenated hydrochlorofluorocarbons, hcfc -123 …

Discovery returns

the us space shuttle Discovery returned to Earth on August 20 with a satellite that has gathered data about ozone depletion in the Earth's atmosphere. The spacecraft had been launched successfully on August 8 after overcoming a communications glitch. It carried a sophisticated, reusable German science satellite crista-spas that studied …

Green fridge

Gadolinium, a rare-earth metal, is being used to create a new technology of refrigeration. The metal heats up when subjected to a magnetic field and cools down when demagnetised. This quality of the metal has been used by Karl Gschnieder, material scientist at Iowa State University, Ames, to make a …

IN F0CUS

The new regulations proposed by the US Environmental Protection Agency (EPA) under the Clean Air Act have kicked up a storm. Although few of its earlier targets have been achieved, the agency has 1@roposed even more difficult regulations. EPA itself predicts that the cost of new regulations will fhr exceed …

Climatic conundrum

a recent research suggests that greenhouse heating would cause warmer, wetter air to reach Antarctica, where it would deposit its moisture as snow. Therefore, contrary to the presumed collapse of the West Antarctic ice sheet, computer models are showing that the great mass of ice in the Antarctic could grow, …

Hole hazards

Ultraviolet rays penetrating through the protective ozone layer over Antarctica are damaging the DNA of higher animals. Scientists from the Northeastern University of Texas, US, found extensive DNA lesions in the eggs and larvae of ice fish - an Antarctic fish that lacks hacmoglobin - during the period when the …

MONEYMAKERS

safe disposal: Chichibu Onoda Cement Corp of Japan is all set to go green by deciding to phase out five types of ozone-damaging chlorofluorocarbons (CFCs) for the government, at its cement plant in Chichibu, Saitama Prefecture. The production of these chemicals has already been banned and the company will incinerate …

Daylight destruction

daylight is not all dewdrops and honey. It also contributes to the destruction of the ozone layer in the stratosphere, say Patrick Aimedieu of France's National Space Research Centre and Bob Sheldon of the University of Houston, us, who base their claims on studies using balloons above southern France ( …

Real power lies with people

On the beginning of the world's first green party: It all began in 1970. The Tasmanian government had decided to build a major power station which would have drowned the magnificent Lake Peddar. The campaign against the government's decision was started by a group of Tasmanian environmentalists who contested the …

A Russian roulette

a worldwide operation of smuggling chlorofluorocarbons (cfcs) and other ozone-eating chemicals in Europe and North America is undermining efforts to heal the ozone layer, claimed British environment minister John Gummer at a recent seminar in London. Identifying the Russian mafia as the main source of illegal cfcs, he said, "Those …

OZONE FRIENDLY

The Sri Lankan environment ministry has issued orders that would ban the manufacture of refrigerators, freezers and air-conditioners using chloroflurocarbons (CFC) after the year 2000. The move aimed at conserving the ozone layer, requires manufacturers to install equipment which will use alternates to CFCs. Those who own gadgets with CFC …

Cause for cheer

GOVERNMENTS the world over can do just that - pat themselves on their backs - for work well done. Dutch scientists, reviewing a year of the international ban on ozone- destroying chemicals have estimated that a total of 1.5 million possible skin cancer cases have been averted in the us …

Cleanliness drive

Britain's Northern Telecom has become the world's first major electronics company to phase out ozone-depleting CFCs from its operations. The achievement was made possible by eliminating the need for solvent cleaning by using an inert atmosphere of nitrogen during soldering. This allows the use of less active fluxes which do …

Ozone overview

Nearly 82 per cent of ozone depleting substances (ods) responsible for most of the harm done to the ozone layer are anthropogenic in nature, related to the West's consumptive lifestyle. If their unrestrained growth continues, the threat to life on earth will become enlarged. Stern measures to control the depletion …

CHINA

Joining international efforts for protection of ozone layer, China recently held its first national conference on ozone layer protection. Song Jian, state councillor and minister in charge of the environmental protection commission said, "Although we are a developing country with dual missions of economic development and environmental protection, China has …

Heavens hellish hole

human assault on the earth's atmosphere continues. Recently, the World Meteorological Organization ( wmo ), a un agency based in Geneva, revealed that the ozone hole measured over the Antarctic during the South Hemisphere spring, is already twice the size of Europe. The hole, first observed in the Antarctic in …

Disarming the disastrous

following a widespread ban on the production of ozone-destroying chlorofluorocarbons ( cfc s), researchers in the us are now attempting to turn massive stockpiles of these substances into useful or at least benign materials. Chlorine atoms from cfc s are known to destroy stratospheric ozone, thereby causing exposure to harmful …

A bracketed meeting in Geneva

the four-day conclave of 100 countries at the Thirteenth Meeting of the Open-ended Working Group to discuss the funding for ozone protocol, ended with more disputes than agreements. The meeting, which concluded on August 29 in Geneva, saw the g -77 and Organization of Economic Cooperation and Development ( oecd …

Layer of woe

there seems to be more bad news pertaining to the ozone layer. The growing ozone hole has allowed for a cooler stratosphere, the layer of the atmosphere 10-50 km above the Earth. Scientists led by Ramaswamy Venkatachalam from the National Oceanic and Atmospheric Administration in the us, measured temperatures and …

The lesser evil

research on finding safer substitutes for ods like cfcs, halons, and carbontetrachloride are underway. In fact certain replacements have already been made and are successfully being used. cfcs are regarded as being harmful because they damage the ozone layer which helps screen out damaging ultraviolet rays emitted by the sun …

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