Iconic landmarks and skylines all across the globe were plunged into darkness on Saturday for Earth Hour.

7 great ways to spend the time and spread the message of Earth Hour with your kids. On Saturday, March 26, 2011, governments, businesses, residential homes, and

Get daily reminders about your carbon footprint and IE will plant a tree of your choice.

Kenaf, the carbon-sequestering monster plant, provides food, shelter and carbon credits.

MNN rounds up some of the Web's most useful tools for shrinking your footprint.

This month, scientists and tree lovers celebrate the 2nd birthday of a hybrid chestnut tree that may be a force in reducing the impacts of climate change.

Norfolk Southern is working with GreenTrees LLC on a five-year reforestation project.

A new website makes it super easy to help save the world, a little bit at a time.

Your car could capture and store carbon dioxide for later disposal, making it zero climate emission even without batteries.

An interview with author Alan Durning on his family's year of living car-lessly.

If you're a San Francisco resident, 30+ years old, and have a clean driving record, you can rent a Tesla for $25 an hour through Getaround.

"Why do you have to sing everything like you just swallowed a pair of jazz hands?!"

Bicycle sales exceed cars in Europe, and there's compelling evidence that pedaling increases the national happiness quotient.

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

We're driving fewer miles and more of us are going car-free, yet we're only scratching the surface of car-isn't-king culture.

Which form of travel gives off the fewest emissions? Let's just say it pays to carpool.

FlightCar leverages all those idle vehicles in the long-term lots, and it's a lifeline for frequent flyers.

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

You can now get a charge out of its new go-anywhere GoCharger.

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

The city fleet will have 425 Leafs, Volts and Energis on the road by early next year.

Being stopped at red lights is more than just annoying; it also can be incredibly unhealthy.

Seen at the Geneva Motor Show, this green family hauler doubles as an office.

Running 2 groundbreaking companies at the same time, Musk succeeds by putting himself on the line more than anyone else, says author Ashlee Vance.

The rumor mill says an all-electric shortened Panamera could grace the show stage in Frankfurt, with 250 to 300 miles of range.

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

The Detroit and New York auto shows may have the new car introductions, but Washington has the politicians.

Electric cars are really shooting off into the stratosphere, and it’s all Elon Musk can do to keep up.

The deal with the Tesla Model 3: 215 miles of range, zero to 60 under 6 seconds, $35,000 — but read the fine print.

Low gas prices, and crossovers with 30 mpg, mean that only a quarter of hybrid and electric buyers are getting another one.

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.

Escaped camel, cow and donkey in Kansas are 'halfway towards a live nativity.'

With its edible veggie walls and lack of traditional HVAC systems, Carbon Positive House aims to "free us of modern day lifelines."

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

SwimCity is a housing concept for young Swedes who don't mind donning goggles or hopping in a canoe as part of their commute.

Just ask Jenna and Guillaume, who quit their 9-to-5 jobs to pursue their dream of touring North America in a custom-built tiny house.

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

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

Sky City was supposed to be 220 stories and this building was supposed to be 97 stories; but there's more to building than just technical innovation.

Photographer Richard Silver captures the surreal ambience of the "blue hour" with these beautifully spliced landscape images.

A tour of the Bullitt Center in Seattle confirms that it's as green as it can be.

With the Living Building Challenge now under its belt, the facility is being heralded as one of the greenest buildings in the world.

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

In rural stretches of Connecticut and Tennessee, two nature-surrounded retreats built for retirees.

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.