An experimental, "green" NASA lander crashed during its first free-flight test on Aug. 9, erupting in a ball of flame when it hit the ground.

The sun-powered plane Solar Impulse demonstrates the vast potential for renewable energy after successfully setting the distance record for solar aviation.

You may not be able to see auroras in person, but soon you can watch them in the palm of your hand.

Itching to go green and not sure where to start? Try these ten simple ideas.

NASA is getting ready to launch a daring test flight of a capsule that could eventually bring humans to deep-space destinations like Mars or an asteroid.

The Mars InSight lander, developed to peer deep into the red planet's interior, is slated to launch on the morning of May 5.

A new George Clooney film and a National Geographic documentary tell the true story of the art experts who foiled Hitler in World War II.

Oceanic Preservation Society will project images of climate change and threatened species on the iconic building ahead of this weekend's Climate March.

Migration forecasts developed by researchers at Cornell University help cities and building owners determine the best time to flip the switch.

The company's New York headquarters is now equipped with energy-saving LED lighting.

Unexplained natural phenomena, which is regularly observed in the aftermath of quakes, occurred during last week's 7.8 magnitude earthquake.

Fueled by denatured ethanol, the EcoSmart Fire is a clean, green alternative to traditional fireplaces.

Annual event, which encourages people around the world to power down for one hour, teams up with the cast and crew of 'The Amazing Spider-Man 2'

Green Shipping lets businesses and individuals measure and offset the CO2 emissions of packages when using UPS, FedEx or the U.S. Postal Service.

My new bike has a lithium-charged motor that kicks in just enough added oomp to power me through hills and headwinds.

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

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

Heatherwick Studio's mighty pretty design for Maggie's Centre Yorkshire resembles a cluster of massive potted plants.

With guidance from the World Wildlife Fund, Swedish retailer IKEA uses bath towels and duvet covers to spread a message of conservation.

Video clips from the great Copenhagen march for the climate.

The tiny desert kingdom has an outsized appetite for fossil fuels, making it an awkward place to host international climate change negotiations.

Meet Visualight, a WiFi-enabled LED bulb that visualizes data as colored light. In other words, when a recent crush messages you on Facebook, the lights in your

In commemoration of National Energy Action Month, our friends at Cree share an infographic highlighting the energy-saving prowess of LED lighting.

NASA will replace the ISS's fluorescent bulbs with an array of LEDs

The NanoLight, a new Kickstarter-funded 12-watt LED bulb, eschews fancy-schmancy smart capabilities and instead focuses on groundbreaking energy savings.

Finally, a lamp that's good enough to eat. For Stockholm Design Week, designer Alexander Lervik debuts an LED lamp with a slowly melting chocolate shade.

The Sylvania Socket Survey is released: Apparently folks are jazzed about the incandescent phase-out even though they aren't really sure what it entails.

LEDs saved about 71 trillion British thermal units, equivalent to an annual energy cost savings of about $675 million!

What energy efficient outdoor lighting options are there? From high-tech to just plain tiki, you've got plenty of options for illuminating the outdoors.

In manufacturing, 'flat' has long been synonymous with 'low-cost' but can this also be applied to consumer LED bulbs? The 2D-Light gives it a go.

Lin Guohui's Bulb Flashlight is just that: A screw-in 40W LEDreplacement bulb with a rechargeable battery that can be removed and used as a handheld torch.

In the near future, streetlights won't just be a source of light; they'll be a smart hub for power and information too.

The phasing out of incandescent bulbs in favor of more energy-efficient bulbs needn't be a confusing.

No, government officials won't break down your door if you have incandescent light bulbs. They will be phased out gradually, with plenty of alternatives.

Just when you thought energy-efficient light bulb uprisings were a thing of the past, the DOE is now powerless when it comes to enforcing efficiency standards.

Now through the end of March, the sale of LED bulbs at IKEA will help to make refugee camps safer and more secure and for the families living in them.

France's most visited house of worship, the Notre Dame Cathedral, just seriously slashed its energy bills with the addition of 400 LED lamps.

Adam finally gets his chance to shine in the (non-damaging) spotlight with 7,000 energy-saving LEDs set to undo the dim atmospherics of the Sistine Chapel.

With its latest consumer release, constantly innovating LED heavyweight Cree hits the under-$10 mark.

The University of Phoenix Stadium undergoes a lighting retrofit that's game-changing in more ways than one.

Described as a 'portable center piece,' Philips newest smart LED is a super-versatile mood-setter.

No window? No problem.

Pigeon-fancying provocateur Duke Riley's 'Fly By Night' is set to dazzle over the East River.

Are harsh white hues ruining Rome's Old World ambiance? The swap of cost-effective LEDs for older, yellow, sodium-vapor streetlights is raising eyebrows.

Dutch designer Dan Roosegaarde's Space Waste Lab visualizes 'the smog of our universe.'

It's time to breathe some fresh air into your wardrobe.

Study estimates $1 million in annual savings, but light pollution and LED's inability to give off heat are issues.

Reduce light pollution to avoid insomnia, cataracts and other health issues — as well as save energy and preserve ecosystems.

You may not know it, but light pollution contributes to carbon emissions and interferes with animal migration. Take these simple steps to reduce it.

Light pollution steals from us the view of the universe in which we live. Check out this beautiful photograph taken high in the Sierra Nevada of an unblemished