Sustainability

The average Nigerian uses about 1/5 the energy of the average American.

Europe has been in the forefront of limiting carbon emissions. Do new European Union rules represent backsliding?

We buy (and throw away) our mobile phones at an alarming rate.

Britain's government supports fracking as a source of cheap gas and jobs but his plans are meeting stiff resistance in the countryside, where New Age protesters and rich conservative country-dwellers want none of it.

Many companies focus on short-term results. The CEO of consumer-products giant Unilever, Paul Polman, says long-term strategic planning builds better businesses.

The Internet is powered by vast banks of computers which chew up energy. That's a big cost for the people who run these servers -- and the earth, depending on how all the electricity is generated.

A food hackathon in San Francisco brought together programmers, designers, and investors to work on ways to improve the food system.

The fast-food chain offers Fish McBites, with fewer calories and certification that the fish is caught sustainably.

Unilever says it will stop adding tiny plastic beads that act as exfoliants to its soap products by 2015.