No one can deny that McDonald's food service is fast, but up until now it hasn't been very energy efficient. The company's 32,000 stores spend $1.5 billion each year on cooking, lighting, heating and cooling.

A variety of industries have been racing to eliminate toxic substances from their products, and the t-shirt screen printing business is no exception. California entrepreneurs Peter Imai and David Whitaker have taken advantage of this trend by creating Ecoprintworks.com, a site that sells toxin-free t-shirts.

Of the 35,000 dry cleaners in the United States, only 35 use toxin-free carbon dioxide cleaning methods. A Seattle startup called Blue Sky Cleaners is aiming to grow that number.

The so-called "Five Horsemen" technologies that can and will reshape the world and humanity's impact on it -- nanotechnology, biotechnology, robotics, information technology and applied cognitive science -- are approaching rapidly enough that the time has come to seriously consider how to incorporate these technologies into a sustainable future.

In what could almost be considered a pre-emptive bailout request, the fuel cell industry asked Congress and the incumbent Obama Administration last week for a staggering $1.2 billion in the upcoming planned stimulus package.

As if visitors to London didn't already have enough to see, the London Transportation Department has just unveiled a sleek zero-emissions double decker bus design.

Ever feel like you're going around in circles and not doing anyone much good? Boon Edam has found a use for that wasted energy. It's created the world's first revolving door that generates energy with every turn.

Even the staunchest environmentalist might turn a blind eye when buying petroleum-ridden plastic Christmas gifts for the kids. Fortunately, a new sustainable bioplastic called ARBOFORM could make this moral dilemma a non-issue.

ROUND ROCK, Texas -- Over the next four years, Dell plans to cut packaging for desktops and laptops worldwide by 10 percent and use more renewable and recycled materials.

SAN FRANCISCO, Calif. -- The second report on recycling and packaging in the beverage industry finds some companies making bigger strides than others, though there is no clear leader.

The Kagawa Pref. Regional Japanese Coast Guard is experimenting with PET bottle lifesavers at three popular fishing breakwaters in an attempt to both save money and lives.

IBM applies its computing expertise -- and the idle processing power of 400,000 civilians -- to explore ways to make rice fields more productive by analyzing the grain's proteins and come up with higher-yield and more nutritious strains.

ANN ARBOR, Mich. -- A Michigan non-profit tested 1,500 toys, finding significant levels of lead, arsenic and other chemicals in one out of every three.