Order of the National Green Tribunal in the matter of News item titled "Ahmedabad Surat landfills among worst three methane hotspots in India" appearing in the Times of India dated 07.02.2024. The application was registered suo-motu on the basis of a news item titled "Ahmedabad Surat landfills among worst three …
There have been many studies on the effects of enriched levels of atmospheric carbon dioxide on soils. A meta-analysis shows that emissions of other greenhouse gases increase under high-CO2 conditions. http://www.nature.com/nature/journal/v475/n7355/full/475177a.html
The accelerating dash for natural gas risks a bitter backlash as the environmental cost of exploiting new shale deposits and of transporting it in liquid form spoil its credentials as the greenest fossil fuel. Gas was long regarded as a "bridging fuel" for use in relatively easily-to-build, gas-fired power plants, …
Wetlands, forests and farmlands soak up large amounts of carbon dioxide but rising amounts of the gas in the atmosphere mean these carbon "sinks" could become less effective at fighting climate change. Scientists say land ecosystems are an essential brake on the pace of climate change because plants soak up …
Increasing concentrations of atmospheric carbon dioxide (CO2) can affect biotic and abiotic conditions in soil, such as microbial activity and water content. In turn, these changes might be expected to alter the production and consumption of the important greenhouse gases nitrous oxide (N2O) and methane (CH4). However, studies on fluxes …
WITH dwindling natural gas and oil reserves, the world is increasingly looking for alternative sources of energy. Industry people say shale gas is one promising option. It is the natural gas trapped in shale, a type of flaky sedimentary rock. It already accounts for 22 per cent of USA’s gas …
Efforts to limit climate change generally focus on reducing carbon dioxide emissions caused by burning fossil fuels. However, another byproduct of fossil fuel combustion is black carbon, a major component of soot. Sources include diesel truck and car engines as well as wood fires, kilns, and stoves. Particles of black …
An irreversible climate tipping point could occur within the next 20 years as a result of the release of huge quantities of organic carbon locked away as frozen plant matter in the vast permafrost region of the Arctic,scientists have found. Billions of tons of frozen leaves and roots that have …
Australia's huge cattle herd in the north might be burping less planet-warming methane emissions than thought, a study released on Friday shows, suggesting the cows are more climate friendly. Cattle, sheep and other ruminant livestock produce large amounts of methane, which is about 20 times more powerful at trapping heat …
VEHICLES and fuels must be seen as a system and not in isolation. Even a clean fuel like CNG may emit high air pollutants if the vehicle engine technology is inefficient to burn the fuel. This is the message from the first detailed testing of CNG three-wheelers in Delhi by …
Directional drilling and hydraulic-fracturing technologies are dramatically increasing natural-gas extraction. In aquifers overlying the Marcellus and Utica shale formations of northeastern Pennsylvania and upstate New York, we document systematic evidence for methane contamination of drinking water associated with shale-gas extraction.
The tribunal officer carrying out a probe into the Sorrange coalmine accident which claimed lives of dozens of miners, has directed officials of the Pakistan Mineral Development Corporation (PMDC) to present a report on the issue at the next hearing of the tribunal. Methane gas explosions at a coalmine in …
We evaluate the greenhouse gas footprint of natural gas obtained by highvolume hydraulic fracturing from shale formations, focusing on methane emissions. Natural gas is composed largely of methane, and 3.6% to 7.9% of the methane from shale-gas production escapes to the atmosphere in venting and leaks over the lifetime of …
Most scientists agree that human activity that releases carbon dioxide (CO2) and other greenhouse gases (GHGs) into the atmosphere is the dominant cause of climate change. The current concentration of CO2 in the atmosphere is around 380 parts per million (ppm), up from 280 ppm in pre-industrial times. The Intergovernmental …
In the energy-poor country of Rwanda only 10% of households have an electricity connection. But scientists have now discovered a renewable energy source in the depths of Lake Kivu: methane gas. Rwanda aims to soon be generating so much electricity from this that it will be able to export to …
As part of the Global Methane Initiative, the U.S. Environmental Protection Agency (U.S. EPA) is conducting a livestock and agro-industry resource assessment (RA) in India to identify and describe the potential for incorporating anaerobic digestion into livestock manure and agro-industrial (agricultural commodity processing) waste management systems to reduce methane emissions …
We present a 650-year Antarctic ice core record of concentration and isotopic ratios (δ13C and δ18O) of atmospheric carbon monoxide. Concentrations decreased by ~25% (14 parts per billion by volume) from the mid-1300s to the 1600s then recovered completely by the late 1800s. δ13C and δ18O decreased by about 2 …
Carbon emission occurs during various stages of life cycle of food products. Greenhouse gases (GHG) emission from 24 Indian food items showed that animal food products (meat and milk) and rice cultivation mostly contributed to methane (CH4) emission, while food products from crops contributed to emission of nitrous oxide (N2O). …
In the present studies, attempts are made to optimize digestion time, initial feed pH, feed temperature and feed flow rate (organic loading rate, OLR) for maximum yield of methane gas and maximum removal of chemical oxygen demand and biological oxygen demand (BOD) of food processing industry wastewaters in three-phase fluidized …
