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A new energy market analysis shows the average cost of electricity from renewables is already lower than from fossil fuels, writes Alex Kirby. And as renewables eat deeper into the 'market share' of coal and gas power plants, so the entire economics of fossil fuel power generation will unravel.

Princeton University recently installed a green roof on a new Wawa convenience store to study the benefits and cost-effectiveness. The Wawa roof stores 79,000 gallons of rainwater to help insulate the building.

General Motors completed a storm water management infrastructure expansion at its Detroit-Hamtramck Assembly plant, which is expected to save the company nearly $2 million annually and cut operational water intensity. The company estimates the cost savings will surpass the total project investment in about 1 year.

PepsiCo achieved a 26% reduction in operational water use per unit of production against a 2006 baseline in 2015, surpassing its 2015 target. The company's water conservation efforts have led to more than $80 million in cost savings since 2011.

Hotels are making dramatic progress in sustainability as they realize its compatibility with luxury and cost savings, global consultant Ashlan Cousteau says. Trends range from organic cocktails to in-room monitoring of water and electricity use.

The latest in water contaminates in this trend is a group of chemicals known as Perfluorinated Alkyl Substances, or PFASs (also known as Perfluoro Compounds or PFCs). Originally developed to help repel stains and improve the effectiveness of firefighting chemicals, these substances have leached into groundwater near factories, military bases and other sites where they have been used heavily. Several Granular Activated Carbon (GAC) solutions are available for treatment of PFCs in groundwater. One of the most cost-effective of these options for PFAS removal comes from coconuts: AquaCarb CX enhanced coconut shell GAC. It combines the benefits of an activated carbon with the high micropore structure of coconut shell, with faster kinetics comparable to bituminous coal.

The current case claims that the government has done both too little to solve the problem of climate change and too much to worsen it-even while knowing of the risks it poses to citizens. There is little dispute that at least some parts of the government have been aware of the causes and costs of climate change for a very long time. 

Coca-Cola European Partners, Avery Dennison, Viridor and PET UK have teamed up to reduce waste, costs and the carbon footprint of Smartwater production in the UK. The initiative, which turns label waste into products, was rolled out late last year in an effort by CCEP to reduce the carbon footprint of its Morpeth factory by approximately 180-200 tons of CO2. The participating parties expect to achieve annual savings of over $30,000 by simply recycling, rather than incinerating or disposing of bottle liners.

More than 4,400 people died last year because of health problems caused by emissions from Pennsylvania and Ohio's power plants, according to reports from NextGen Climate America and PSE Healthy Energy. In total, the states' power plants caused problems that cost state residents $40 billion in health care bills, the reports found.

Evoqua Water Technologies' water treatment system will save Washington County, Maryland, $16 million in upgrade costs, according to the county.

The cost of wind energy in the US will continue to decline over the next three to five years as the industry prepares for the wind energy Production Tax Credit to lapse, according to Pattern Energy CEO and President Mike Garland. He said that Pattern has begun retrofitting its turbines to boost performance.

Food loss and waste costs businesses billions of dollars each year and it generates about 8 percent of global greenhouse gas emissions, accounting for the carbon footprint of food produced and not eaten.

Rust-belt cities such as Gary, Indiana, want to spur urban renewal through large-scale greening programs, such as transforming vacant lots into community gardens, parks and micro-habitats. "There's a tremendous interest because some of these things are lower cost than traditional development, but at the same time their implementation will actually make the other land more developable," says Eve Pytel of the Delta Institute.

A dozen major retailers have joined a push for tougher restrictions on trucking emissions and are asking regulators to push for swifter and steeper reductions in fuel use by the freight sector. The firms, which include General Mills, Ben & Jerry's, Stonyfield Farm, and Patagonia, say stronger standards would help reduce their operating costs and make it easier to pass savings along to consumers.

HP has committed to powering its global operations with 100 percent renewable energy - and says it plans to reach the 40 percent renewable electricity mark by 2020 - because, as Nate Hurst, HP's chief sustainability and social impact officer says, "both cost-effective and low carbon sources of energy are essential to the future and the growth of HP's business."

Walmart has agreed to pay $1 million to settle greenwashing claims that allege the nation's largest retailer sold plastic products that were misleadingly labeled "biodegradable" or "compostable" in violation of California law.

Carnival, docked in the spotlight when it received the New Economy's Clean Tech Award for Best Marine Solutions Company. The award recognized Carnival's decision to install a new exhaust filtration system on its North American ships, at an estimated cost of $180m

Coca-Cola and other corporations are starting to see global warming as an economically disruptive force affecting commodity costs and supply chains.

Conducting due diligence on the environmental and social practices of small and growing agricultural businesses yields financial benefits to lenders that partially or fully offset the costs involved, according to nonprofit agriculture lender Root Capital.