Honor your favorite boss on this holiday, which falls on Saturday, Oct. 16, 2010.

Matt Hickman unravels the mysteries behind offsetting CO2 and buying RECs. (Hint: One of them can fund tree-planting efforts.)

COTAP will focus its carbon offsetting projects in impoverished countries.

Polio could be wiped out by 2018, but Gates says it will require investment and hard work.

Video: Get your green tips from Amanda Seyfried and Olesya Rulin.

Enterprise is expanding its carsharing services despite a company executive’s dismissal of the need for a separate carsharing industry.

Studies show that drivers older than 85 get into fatal accidents almost 4 times as often as teens do, and intersections are a problem.

Two new studies decipher who prefers which kind of car, revealing unexpected attitudes that challenge many assumptions.

Uber and Lyft are both offering discounted ridesharing services. Today in San Francisco; tomorrow the world.

Helsinki is experimenting with a plan to match people with rides, making cars unnecessary.

Automakers like Volvo, VW, BMW, Audi and Mercedes are going full speed ahead, aiming for autonomous cars on the road by 2025.

A new report from KPMG sees 500 billion annual miles from people who might have otherwise stayed home.

Quant's fire-breathing electric supercar performs great — on paper. The futuristic battery tech is cool, but will it work?

Autonomous vehicles will be ready soon — to ferry retirees around closed communities.

The City of Lights is for lovers ... and pedestrians, bikers and transit riders.

Proterra's new Catalyst is a lightweight, energy-efficient marvel with six times the efficiency of diesel.

It was a combination of hubris, professional rivalry and a desperate bid for success in the American market.

A $2,500 download gets you a car that steers, brakes, accelerates and changes lanes.

Effects include people traveling more, in bigger cars (EV sales are flat), and a dip in public transit.

As CES proves, the gadgets are more important than the color and the trim package.

Science Guy Bill Nye wants battery-powered stock car racers. But fans go for the noise.

BMW Vision Next 100

VW is poised to reinvent itself as an EV-friendly treehugger.

This four-part series gives great advice on getting a new generation to enjoy the outdoors.

Video: At-risk young people get hands-on training and spread their new green skills throughout The Big Easy.

Video: At 6 billion bottles and counting, a Fortune 100 company has forged a partnership that’s created the largest recycling center of it’s kind in the wor

Video: Pizza Fusion shows us how any job can become a green job with the right attitude and practices.

There are many different types of staircases that can make your home a more efficient, safer and even a more attractive place.

An interesting new prefab in Australia is described as being "Carbon Positive," but what does that mean?

Architect William Maclay brings some sense and sensibility to the concept of net zero energy building.

Environmentalist Peter Bahouth shares the inspiration behind Atlanta's most leafy and lovely Airbnb listing.

Bjarke attack! The Danish maverick is the subject of a climate-themed retrospective at the National Building Museum.

The Passive House Institute and the Passive House Institute US are making news this week as standards change and they diverge further.

Beauty abounds in the weather-warped details of Dwell Development's latest net-zero residence.

The after-school carpentry wizards at Sawhorse Revolution have big, community-bettering plans for micro-housing.

In a once iffy stretch of East Oakland, Tassafaronga Village stands as a model of affordable green housing done right.

Co-owned by a quartet of couples, Llano Exit Strategy blends communal living and rural solitude.

Michael Green, champion of lanky, carbon-neutral buildings, sets his sights on the City of Light.

Friggatto cleverly evades the exhausting, expensive process of securing a housing permit in Sweden.

Beautiful and daring, Cinder Cone will resonate with those who have graduated from Thrasher to Dwell.

It's a little bit Ewokian, a little bit New Urbanist and a whole lot intriguing.

Leave it to Shigeru Ban to breathe ingenious new life into the painfully abundant remains of a major catastrophe.

Getaway provides a woodsy, off-grid respite from the concrete jungle.

University of Cincinnati students score big in the 2015 perFORM Building Design Competition.

At long last, Brad Pitt's green rebuilding effort thinks smaller (but just as sustainable).

Why move to the woods when you can live in a tower that doubles as a coniferous forest?

Developers behind the 104-acre sustainable project in Belize promise to consider all concerns ahead of construction in 2017.

Hydraulics give a British backyard potting shed a lift when needed.

How they can provide some space for the next generation as well.

Despite inherent flaws, House in the Tree is a fanciful fir-based escape.