Cities of low and middle-income countries face severe challenges in managing the increasing amount of waste produced, especially the organic fraction.

The Dhapa dumping ground has been burning for nearly a month and the thick smoke billowing out of the site is making the city’s polluted air even more toxic.

Mumbai’s landfi ll fi re shows that Indian cities are at sea with garbage. (Editorial)

Landfill disposal of municipal solid waste represents one of the largest anthropogenic global methane emission sources, and recent policy approaches have targeted significant reductions of these emissions to combat climate change in the US. The efficacy of active gas collection systems in the US was examined by analysing performance data, including fire occurrence, from more than 850 landfills. A generalized linear model showed that the operating status of a landfill—open and actively receiving waste or closed—was the most significant predictor of collection system performance.

An important way to address global food security is to make better use of the food already produced. Since at least one third of global food is wasted before consumption, there are enormous incentives to cut this waste and create a more sustainable food system. This paper focuses upon saving food loss at the supermarket level in the US and channeling this food stream in new and efficient ways to those in hunger.

In 2010 an estimated 31% of the food in U.S. stores and homes went uneaten, and Americans shipped approximately 34 million tons of food waste to landfills. When food decomposes under anaerobic conditions—for instance, buried beneath other waste in a landfill—it produces methane, a highly potent greenhouse gas. According to the U.S. Environmental Protection Agency, landfills are the third largest producer of methane in the United States, accounting for about 18% of methane emissions in 2013.2

The UK is one of several countries around the world that has enacted legislation to reduce its greenhouse gas emissions. In this study, we present top-down emissions
of methane (CH4) and nitrous oxide (N2O) for the UK and Ireland over the period August 2012 to August 2014. These emissions were inferred using measurements from a network of four sites around the two countries. We used a hierarchical Bayesian inverse framework to infer fluxes as well as a set of covariance parameters that describe uncertainties in the system.

Methane is the second most prevalent anthropogenic greenhouse gas emitted in the United States and has a global warming potential 28–34 times higher than carbon dioxide over a

"Climate Change 2013: The Physical Science Basis" is the contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. This comprehensive assessment of

New Delhi: A new technology for recovering landfill gas may reduce harmful greenhouse gas emissions from landfills by a great extent.

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