In response to global warming, the Brewer–Dobson circulation in the stratosphere is expected to accelerate and the mean transport time of air along this circulation to decrease. This would imply a negative stratospheric age of air trend, i.e. an air parcel would need less time to travel from the tropopause to any point in the stratosphere. Age of air as inferred from tracer observations, however, shows zero to positive trends in the northern mid-latitude stratosphere and zonally asymmetric patterns.

Noting that air pollution has reached crisis level in Northern India, government think-tank Niti Aayog has recommended a slew of measures like imposing higher taxes on petrol in and around the more

Green activist Sunita Narain on Thursday said the Environment Pollution Control Authority, of which she is a member, is determined to get a ban on petcoke import as the country should not become a

Scientists have developed a catalyst that can curb emissions of nitrogen oxides from diesel-powered vehicles, an advance that may help reduce air pollution and smog.

Sixty three signatories from civil society organisations, medical professionals and concerned citizens all over India have written to the Minister of Environment Forest and Climate Change, urging i

The new stations will monitor eight parameters --ultrafine particulates PM 2.5, PM 10 and sulfur dioxide, nitrogen dioxide, carbon monoxide, benzene, ammonia and ozone

Disregarding new environment regulations, the Central Electricity Authority (CEA) has given more than 300 thermal power plants two to five-year reprieve from adhering to the strict air pollution st

Deadly ozone has raised its ugly head in Delhi and NCR and without a time bound implementation strategy and preventive action this can deepen into a serious public health crisis.

The Union power ministry has taken a serious note of the pollution caused by the coal-based thermal power plants.

Already dealing with the high particulate matters in the air, the national capital this summer has witnessed an alarming build-up of ozone, a Centre for Science and Environment (CSE) study said on

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