Bonneville, the Northwest's biggest clean-power supplier, faces promise and perils in changing energy markets

Although Nigeria "is arguably the worst-run of the world’s major countries," it's biggest city is providing a model for how to turn poor governance around. Lagos, a historically fragile city like the rest of Nigeria, has devolved more power to civilian rule, which has shown positive results for the health of the city.

Corporations concerned about their social and environmental impact must also consider the costs. Bcorps, a new form of corporation in the U.S., are using a rigorous certification process to gain consumers trust and boost sales.

New York City black tar roofs cause a number of environmental problems, including air pollution, heat absorption that raises energy consumption, and storm water runoff in the sewer system. Efforts to turn these old roofs into green spaces cool the buildings, enable the containment of more rainfall, reduce sewer discharge, generate energy, and absorb carbon emissions. New York City has a pilot program offering financial help for green roofs.

More Than Wheels, a New Hampshire-based non-profit offers an economically stable solution to the high cost of owning a car. The program offers low-cost car loans that go toward the purchase of fuel-efficient vehicles.

Farmers in California increasingly face water shortages. To help solve the problem, some are looking to Australia, where a national water market has provided an economic solution. By buying and selling water rights, farmers have incentives to reduce consumption.

Although residents turn up their air conditioners, Louisville heat is increasing the city’s death rate by 39 people every year. The city mayor launched a tree commission for planting more trees and since 2011 has planted over 12,000 trees. The canopies from the tree offer cooling shade and bring down the temperature of the city as a whole. The response also includes the installation of green roofs and in-depth research on urban heat islands.

The U.S. government has developed different sensors for irrigation devices that gauge water demand and help conserve use. as water shortages caused by drought have increased across the globe, and farmers are faced with economic burdens, such technology is focusin on sustainability for the future.

Retrofitting buildings for energy conservation in the United States could save $1 trillion over a decade, reduce American greenhouse gas emissions by 10 percent, and create employment across the country. Many universities and other institutions are creating green investment funds to sustain projects that enhance efficiency.

A follow-up article on Husk Power Systems, which has created a scalable system to turn rice husks into electricity that is reliable, eco-friendly and affordable for families in India. The company bases their business model around local involvement, grassroots systems that cater to the immediate community, and continual accountability. This article fills in some information gaps from the initial piece, "Fixes: A Light in India."

In just the next couple of decades, the World Bank says, farmers across Africa could lose more than half their cropland to drought and heat - the issue is considered so pressing that, a few years ago, Malawi's Department of Meteorological Services added "Climate Change" to its name. A new aid group group now works with farmers in more than 60 villages — with plans to expand — helping them become more resilient to a changing climate.