Wind is cheaper than coal, oil and gas, says European Union study
If your price doesn't reflect the true cost of your product, then there's no such thing as a free market.
Renewables = 92.1% of new US electricity capacity so far in 2014
We still need a ton more renewable energy in order to combat climate change, but the good news is that renewable energy is picking up the pace.
The debate over nuclear power: An engineer looks at the issues
Nuclear power is so controversial; an engineer working on the Bruce Nuclear plant gives his point of view.
Generation gap: wind opens big lead over nuclear in China
In China, wind power is leaving nuclear behind. Electricity output from China’s wind farms exceeded that from its nuclear plants for the first time in 2012, by a narrow margin. Then in 2013, wind pulled away—outdoing nuclear by 22 percent.
Jellyfish swarm clogs nuclear reactor
Tons of jellyfish clog a water intake pipe at the Oskarshamn power plant in Sweden, forcing operators to shut down the reactor.
Happy Petrov Day! (How we narrowly avoided nuclear war on this day in 1983)
Most of us alive today owe a debt to those who avoided nuclear war in years past, and sadly, there were many occasions when that was necessary.
100% nuclear free: Japan shuts down its last reactor
On Monday (Sunday locally), Japan switched off the last of its operating nuclear reactors and became 100% nuclear-free.
U.S. Nuclear Power in Decline
Nuclear power generation in the United States is falling. It plateaued between 2007 and 2010—before falling more than 4 percent over the last two years. Projections for 2013 show a further 1 percent drop.
The United States uses 39% of the energy it produces, wastes 61%...
There are huge gains to be made by boosting efficiency. Even if we can never get to 100% because of the laws of physics, we could get much closer than we are now.
300 tons of radioactive water has leaked from Fukushima
More than two years after the nuclear disaster at Fukushima, Japan, the situation is worse than ever.
Hero: Fukushima's ex-chief who spent 6 months at the station after the disaster just died of cancer
Masao Yoshida, one of the Fukushima 50 who stayed behind at the earthquake and tsunami-struck power plant after the other employees evacuated, has just died from esophageal cancer.
Here's what you get when a whale and a dolphin mate
A wholphin? A dolphale? Whatever you call it, the first known hybrid between a melon-headed whale and a rough-toothed dolphin is a wonder.
Hawaiian volcano offers gifts of gemstones delivered from the sky
As if to say 'sorry,' Kilauea softens its fury by tossing shimmery green olivine to the humble humans below.
Hawaii approves sunscreen ban in an effort to save coral reefs
Many sunscreens contain chemicals that are devastating to sensitive coral and other marine life.
Graham Hill and LifeEdited go off-grid in Maui
Since before he started TreeHugger, Graham Hill has delivered the same message: sustainability can be beautiful and fun.
Twin modern cabins help nurture a close relationship with nature
Simple, no frills cabin living at its best, right by the ocean.
Honolulu bans pedestrians from “distracted walking”
More pedestrians are getting killed in the roads. Are their phones really the reason?
Hōkūle’a, a traditional Hawaiian deep-sea canoe, has completed round-the-world trip
It took three years, but Hōkūle’a made the impressive journey using only ancient Polynesian navigational methods.
Tesla supplying solar power to Hawaii all day and all of the night
Solar City and Tesla take the Kinks out of solar power with plenty of PowerPacks
Hawaii wants to ban chemical sunscreens to save its coral reefs
When sunscreen chemicals wash off beach-goers, they bleach coral, stunt its growth, and sometimes kill it outright.
New Hawaiian coral-reef fish named for President Obama
The new species endemic to the marine protected area expanded by Obama was named in honor of his efforts to protect and preserve the natural environment.
Hawaiian Licorice Company offers all-natural, mouth-watering flavors
This is candy in its purest form -- certified organic ingredients, zero artificial colors and flavors, no preservatives or GMOs.
LifeEdited: Maui: An introduction
Help Treehugger founder Graham Hill design his compact, off grid, energy positive compound in Maui.
New documentary contrasts industrial ag with traditional Hawaiian model: ʻĀINA
This short film, while focused on the island of Kauai, highlights the challenges and crises we will all have to face on our island planet.
Woman plans a dolphin-assisted birth in Hawaii
Move over, indoor birthing tub. This woman wants to deliver in the Pacific Ocean with dolphins as midwives.
Hawaii flips switch on Ocean Thermal Energy Conversion plant, harvesting clean energy from the sea
It's the first plant plant of its kind in the states that generates electricity from the temperature differences in the ocean.
Solar-powered plane stuck in Hawaii until 2016 because of "irreversible" damage to batteries
There are worse places to be stuck than in Hawaii... I'm starting to think they did it on purpose!
Hawaii’s plastic bag ban goes into effect, but…
On the first of this month, Hawaii became the first state in the U.S. to put a plastic bag ban into effect.
Old buses turned into mobile shelters for Hawaii's homeless
Decommissioned buses are getting a second useful life as mobile shelters for Honolulu's homeless.
Woman builds Hawaii tiny off-grid vacation home for $11,000 (Video)
Building her first tiny home meant enough financial freedom for this tiny house builder -- enough to build another off-grid tiny vacation home in Hawaii.
Yay! Hawaiian monk seal pups are on the up and up
There’s some good news about the endangered Hawaiian monk seal.
Photo: Sweet seal takes a roll in the Hawaiian sand
This endangered Hawaiian monk seal was photographed at the Poipu Beach Park in Kauai.
Man charges a LEAF electric car using an Hawaiian volcano! (video)
It's not quite as dramatic as it sounds. It's simply a good demonstration of the power of regenerative braking!
25,000+ fish killed by Hawaii molasses spill
Last week, 233,000 gallons of molasses spilled into Hawaii's Honolulu Harbor killing thousands of fish, eels, crabs and other aquatic life. And the damage continues to worsen.
Hawaii molasses spill killing thousands of fish & aquatic life, impact could last years.
On Monday, a molasses pipeline (yes, that's a thing!) leaked 1,400 tons -- 233,000 gallons -- of molasses into Hawaii's Honolulu Harbor and it has turned into a killer mess with no quick solution.
Google Street View coming to Hawaiian hiking trails
Soon you'll be able to see hardened lava flows, rainforests and beaches up close without leaving your house.
Breathtaking timelapse video shows the beating heart of Hawaii Volcanoes National Park (video)
It was shot from "sea to summit" in Hawaii Volcanoes National Park, one of the most dynamic landscapes on Earth.
How did ancient farmers take over Europe?
Hunter-gatherers used to populate Europe before ancient farmers took over. Scientists are trying to figure out what happened.
The Beau Lake Runabout re-invents the pedal boat
It goes from bland plastic to a thing of beauty.
Researchers say they're close to a finger swipe-powered phone
Forget plugging in your phone to charge, soon the battery could stay topped off from swipes and typing.
Energy-harvesting wood floors could be the next great green thing in homes and businesses
Could this be even more encouraging than a FitBit to get up and walk around?
MIT has developed a new energy harvesting technology based on small bending movements
Walking and other gentle movements could power the next generation of devices.
Foot-powered washing machine lets you clean your clothes off grid
The small device is perfect for tiny homes or those wanting a convenient, yet electricity-free option.
Teen inventor creates a coffee mug to power your gadgets
The same inventor who brought us the body heat-powered flashlight is at it again.
Skin patch could power personal devices
The shiny sticker generates energy from movement.
Make a shake flashlight out of a cardboard tube
This quick project makes a useful emergency flashlight while recycling your leftover cardboard.
Soccer field lights powered by kids' pounding feet
A community soccer field in Rio de Janeiro stays well lit at night thanks to energy harvesting tiles laid under the turf.
Cell phones charged by sound are now closer to becoming a reality
Nanotechnology breakthroughs have lead to a successful prototype of a device that could charge your cell phone with ambient noise or the conversations of users.
Musical shaker could light the way home for African school kids
Spark is a musical instrument that harvests kinetic energy when it's shaken, storing it in a battery for powering LED lights.
What's a 'sticky' street and why do you want one?
We matured our cities around the needs to cars. Now it's time to mature our streets around human, not machine, needs. We are all pedestrians.