Greenhouse gas from wasting food at home

Almost half of wasted food comes from homes, and almost half of that goes to landfills. The rotting food then produces methane. For Reuters, Ally J. Levine and Daisy Chung illustrate why that’s an issue and why we should minimize the amount of food we throw away:

Methane produced by food decomposing in landfills makes up 1.6% of all human-made Greenhouse Gas emissions. While that may not sound like much, it’s a large percentage for such a specific pollutant. When scientists look at hyper-specific categories, Karl says, anything over 1% is significant.

“Any action that can prevent food waste from sitting in untreated piles will directly lead to climate impacts being reduced.”

I appreciate the illustrations that make the data less abstract, which have become standard from Reuters Graphics.

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Reducing methane to slow climate change

We often hear about increased CO2 in the context of global warming. Hayley Warren and Akshat Rathi for Bloomberg show why we should talk more about methane:

In the fight against global warming, methane has flown under the radar for too long. But there’s increasing recognition that tackling the invisible, odorless gas is one of the easiest, cheapest, and most feasible ways to make a real difference in slowing climate change. It’s the rare climate problem with a fix that can be felt by those alive right now, not their great-grandchildren.

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Making invisible gas leaks visible

For The New York Times, Jonah M. Kessel and Hiroko Tabuchi went to oilfields in Texas with an infrared camera to look for methane leaks.

Okay, important topic here, and the contrast between regular photograph and infrared video is alarming, but I may have been drawn to the methodology at the end:

To create images of methane emissions in the Permian Basin, The Times used a custom-built FLIR camera that converts infrared energy into an electronic signal to create moving pictures. The camera’s filter allows infrared wavelengths between 3.2 to 3.4 micrometers on the electromagnetic spectrum to pass through to the sensor.

To visualize gas, the camera uses helium to cool down the sensor to the temperature of liquid nitrogen, around minus 200 degrees Celsius. Unlike traditional photography lenses, which are glass, the infrared images were created using metal lenses made from germanium, which is transparent at infrared wavelengths.

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