NASA will send off the "Sunjammer," a 128-ft solar sail, to record space weather and study the Sun.

NASA's far-reaching space probe is still within the sun's sphere of influence, but soon will leave into prediscovered areas.

A tiny satellite has recovered from an apparent software glitch in orbit and is on track to deploy its solar sail.

The Planetary Society's tiny LightSail spacecraft has sent a photo of its deployed solar sail down to Earth.

Want to see if your home is a good fit for solar? Project Sunroof offers a decent snapshot from your web browser.

At a reservoir outside of Tokyo, water and electricity do indeed mix.

20-acre solar installation near Walt Disney World’s Epcot theme park has begun supplying clean energy this spring.

Kitschy nostalgia and clean-tech collide along Route 66, America's Mother Road, thanks to Solar Roadways.

As it turns out, the Swedish retailer's rooftop power plants are also the biggest in several other states.

It will indeed, claims newly minted PV shingle magnate Elon Musk.

Utilities from California to North Carolina are preparing for a brief but sharp decrease in solar production during the Great American Eclipse on Aug. 21.

You might be familiar with floating wind turbines, but what about floating solar panels?

A new feature added to Project Sunroof, a free solar mapping tool from Google, makes keeping up with Joneses even easier.

China has now given a face to its aggressive renewable energy goals — and man, is that face adorable. (It's a panda.)

Eco-conscious Dutch poultry company Kipster wants to revolutionize the egg industry.

Heritage rail and clean tech collide in the Aussie beach town of Byron Bay with the introduction of a solar panel-topped vintage train.

Following a protracted court battle, Six Flags Great Adventure is set to become the world's first theme park that's fully powered by the sun.

Lives would be saved and farmers would enjoy a healthy profit from the switch from tobacco to solar, according to a Michigan Tech-led case study.

California approved new rules that require new homes and low-rise apartment buildings to use solar panels starting in 2020.

The Sahara, one of the largest deserts in the world, could be transformed into a more hospitable place thanks to clean energy.

When you can't harvest crops, why not harvest the sun?

Twelve of the world's leading chocolate producers, with some help from Prince Charles, intend to tackle deforestation.

Beautiful solar system map by Eleanor Lutz shows the orbits of more than 18,000 celestial objects.

Competitors from around the world line up on an Arctic ice floe to tackle one of the world's most difficult 26.2-mile races.

A medium-size solar flare erupted from the sun this weekend, hurling a cloud of plasma and charged particles toward Earth on a cosmic path that is expected to d

HyperSolar magnifying film can increase solar panel efficiency by up to 300%, making solar competitive with fossil fuels.

Harish Hande launched his solar company to dispel the myth that renewable energy was too expensive for poor people. The West could learn something from him.

A well-known Chinese solar power company has filed for bankruptcy, but this may actually be a sign of health for the industry.

The predators burn energy 1.6 times faster than previously thought, a study finds, helping explain why the loss of sea ice hits them so hard.

The new towers collect much more sunlight during the mornings, evenings and all days of the year regardless of clouds or shadows

Organic, fair trade, locally sourced … these chocolates fit the sustainable requirements our food blogger expects — and they're absolutely delicious, too.

With only the sun for energy, it can collect 3 liters of water a day.

First the Danes fund the largest wind company in the U.S. Now the Spaniards are set to open a 24-megawatt solar plant in California. Why are American investors

With the right rebates, solar panels can offer a return on investment far higher than you'll find in the S&P 500.

MNN's lifestyle blogger raves about a fair trade, organic alternative to Reese's peanut butter cups. Sunflower seed butter fans will love these treats.

Divine Chocolate's fair trade 70% Dark Chocolate with Raspberries combines rich chocolate decadence with tart fruity flavors.

In honor of this delicious holiday, we’ve got recipes for organic and vegan chocolate cakes to satisfy everyone’s cravings.

If you didn’t think ahead, shop your store’s candy aisle for these sustainable Valentine’s Day treats.

MNN's lifestyle blogger loves the sweet and crunchy taste of Chocolate Maca Chunk — a raw, organic, vegan and fair trade chocolate bar handcrafted by Lulu's C

MNN's lifestyle blogger taste tests organic vegan chocolates infused with flower essences that are said to lift moods and spirits.

Stock up on Endangered Species chocolate — just 49 cents for full-size candy bars.

One of our food blogger's choices for responsibly made treats for your trick-or-treaters this Halloween that won’t break your budget.

Chocoholics (and cacao growers) rejoice! A type of cocoa once believed extinct has been found! Criollo cocoa has much lower yields and is less disease-resistant

Have you considered the impact of your purchasing decisions? That's what I've been doing — again.

October is Fair Trade month! I am celebrating with the following products.

Some experts are predicting that you may have to spend more on chocolate in the future. Here are some things to consider.

I loved hot cocoa packets when camping, but didn’t like the cheap ingredients used to make them. Problem solved.

The Harry Potter Alliance worked to ensure all the chocolate sold in the fictional wizard's name would reflect the values he fought for.

To'ak Chocolate is fair trade, USDA organic-certified and exclusively sourced from rare cacao beans found in Ecuador.

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