Sustainability

As America's craft beer industry continues to boom, the waste it generates can pose challenges for sewer systems. But if it's used in the right spot, in the right amount, it's potentially beneficial and can actually save wastewater treatment plants money.

In Bozeman, Mont., the Water Reclamation Facility treats more than 6 million gallons of water every day from sinks, showers, toilets — really anything that goes down a drain. That includes liquid waste from more than 10 breweries in this city of nearly 50,000.

Esther Honig / KUNC

Harmful emissions from the agriculture sector are increasingly scrutinized as the climate changes. Now, energy companies want to help dairy farmers reduce emissions.

Virginia-based Dominion Energy and Vanguard Renewables Ag of Massachusetts have announced a $200 million partnership to convert methane from cow manure into renewable natural gas.

Courtesy Tamera Breidenbach

Colorado State University is part of the international climate talks. About a dozen CSU students are in Madrid, Spain for the United Nations Climate Change Conference, participating in the 25th session of the Conference of the Parties (COP 25).

There is a swath of the Gulf of Mexico that's virtually devoid of life because algae blooms have choked out marine plants and animals; scientists say it is growing and getting worse.

One of the culprits lies to the north, in the massive amounts of fertilizers used on corn and soy farms throughout the Midwest.

The avalanche of plastic waste that's rolling over land and sea has inspired numerous potential solutions. Some involve inventing our way out of the mess by creating new kinds of natural materials that will harmlessly degrade if they're thrown away.

Others say it might be quicker to change people's throwaway behavior instead.

Electric cars are all over the roads these days. But what about electric planes?

Air travel currently accounts for only about 2% of global carbon emissions. But it's expected to grow in the next century, and clean air travel is seen as a key part of slowing global warming.

As a fashion brand, Zara has made a name for itself by democratizing the latest clothing styles for consumers at an affordable price. But the rapid pace of that trend-driven business model, known as "fast fashion," can come at high environmental and social costs.

Last week, Zara's parent company, Inditex, announced its plans to grow more sustainable.

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Why would a wildlife conservation organization be involved in a campaign to push people to diversify their diets? As it turns out, the way we humans eat is very much linked to preserving wildlife — and many other issues.

Bigger isn't necessarily better when it comes to catching, selling and eating fish.

For certain snappers, in fact, a market preference for plate-size whole fillets is driving fishermen to target smaller fish. For some wild fish populations, this is a recipe for collapse.

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