In Virginia, carbon emissions drop as data centers boom, thanks to RGGI pact

Eight years after a mercaptan spill in Eight Mile, Alabama, its mostly black and working class residents still suffer from respiratory issues, rashes and headaches.

Phone lines in Africa and South Asia would never have gotten to the poor - but these places have leapfrogged over last-century technology and gone straight to mobile phones. Now the same thing is happening with off-grid solar power: the fastest -- perhaps the only – way to power the poor.

Evidence continues to build that humans are contributing to a climate change issue that is nothing but bad news for the planet. Hopeful stories from seven countries, including India, Indonesia, and China, show that efforts to combat climate change might finally be working.

In light of climate change, New York State's Common Retirement Fund, the country's third-largest pension fund, decided to invest in a way that rewards companies with low carbon footprints.

A overview of 2014's Fixes columns - connecting the dots between 60 or so ways that people are trying to change the world.

The breakdown of the ozone layer is one of the most well-known effects of climate change. Citizens enact different ways to protect the atmosphere from a build up of methane gas.

A growing number of people in the famously crowded Tokyo metropolis are becoming ‘city farmers’, planting crops atop tall buildings or deep underground. In an age of detrimental climate change, urban cultivation and green roof agriculture will soon be necessary as food, water and energy resources become scarcer.

Most people are unaware of how much food they waste. Food waste campaigns across the world are using creative marketing to raise awareness and encourage behavior change.

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.

In Louisville, KY, many people suffer from allergies or asthma and need to take inhalers to assist their breathing. A new inhaler called Propeller Health connects to Bluetooth devices to help patients track their inhaler dosages as a form of self-surveillance. The data collected also has a broader impact, offering scientists insight on people’s breathing patterns in different geographic regions as well as the effectiveness of certain medicated inhalers.