This photograph was taken at Nairobi National Park, which is located just four miles south of the city’s urban center.

This endangered Hawaiian monk seal was photographed at the Poipu Beach Park in Kauai.

Move over, indoor birthing tub. This woman wants to deliver in the Pacific Ocean with dolphins as midwives.

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.

A look at some recent posts on our sister site that might interest TreeHuggers.

These coolest of sea creatures know what they're doing.

Why does this not surprise me?

The gruesome deaths raise serious questions about the practices of fishing trawlers.

The debate over the true ecological sustainability of biofuels, the effects on global food prices, and their oft-heard claims of carbon-neutrality has been played out on TreeHugger in great detail. Adding a new

"Let’s abandon this disastrous experiment."

The material could also one day charge our devices.

Our photo of the day visits the wacky world of nudibranch sea slugs.

Memorize this and you'll be set in the kitchen.

We are officially in love with Loch Pooltiel.

These devices help solar lighting move beyond the flatness of traditional photovoltaic cells.

Another large-sized solar charger and battery system is about to hit the market, as an off-grid solar generator in a briefcase.

The inventors of the innovative LuminAID solar lantern are Kickstarting another version of their device, this time with the added feature of a charging port for portable electronics.

With 20 watts of solar panels, a 16Ah lithium-ion battery bank, and an onboard inverter, along with multiple charging ports, this compact solar generator is a great off-grid accessory.

These pictures from the Sun Trip 2018 race prove the only limit is imagination. Congratulations to Sun Trip race winner Raf van Hulle (tech spec of his bike below).

"Siri, turn down the temperature in my bedroom please"

Our photo of the day shows Mother Nature's flair for drama.

Edward Burtynsky's collection called Water documents the role water plays in ecosystems, energy, cultural practices and disasters.

Tuna producers are notorious for unethical labor and unsustainable fishing. It's time to learn more and take action.

The San Francisco Giants won the 2012 World Series, but this gardener doesn't seem to care.

San Francisco is admirably progressive when it comes to reducing food waste and keeping food local and seasonal.

Traveling exhibit in Turkey prompts audiences to put on their 'climate glasses' and see how floods, fires, and drought in the country are all connected.

Celebrated English painter David Hockney has turned to the iPad as his canvas -- embracing the latest technology despite his age.

"Brains: The Mind as Matter" at the Wellcome Collection features 150 objects including real brains, anatomical models and artworks, and more.

It's the most prestigious photography prize (and best paid) and here's this year's winner.

Tim had planned on working at a Salt Lake City Unitarian church doing social outreach. That is, until the Federal Bureau of Prisons decided that wasn't a "safe" occupation for the climate activist.

Our photo of the day comes from the rainforest of Ecuador.

Our photo of the day is in praise of the pollinators!

A giant resin bee is drawn to purple loosestrife, can you guess the connection?

Our photo of the day comes from a pretty spot in Florida.

Our photo of the day comes from the rainforest of Ecuador.

Our photo of the day comes from the magical rainforest of Ecuador.

Our photo of the day illustrates the whimsical world of camouflage.

Our photo of the day illustrates why the word 'caterpillar' (literally, shaggy cat) makes perfect sense.

These impressive feats of architecture and engineering are one of India's traditional methods of water conservation. Now threatened by disuse and a growing water crisis, one photojournalist is documenting them before they are forgotten.

What can you do with 1.285 bright green used uniforms? This was the brief the design students at Elisava school in Barcelona received by Urbaser, a local waste collection and urban

Scientists have named a new marine ecological community, the Plastisphere, comprised of, you guessed it, plastic -- and all the organisms that now call ocean plastic home.

This 10-minute video was shot by a man who was supposed to be at the MusiCafé bar that was engulfed by flames on july 6.

From its tiny source to the Houses of Parliament, here are glorious photos of the River Thames.

Our photo of the day pays homage to the first designated Canadian Heritage River.

Sensors on cell phones is a concept that has gone mainstream enough that this Kickstarter project has blown its funding goals out of the water. The device turns your cell phone into a "Swiss Army Knife of environmental sensors."

This competition for the best environmental photography never fails to be interesting and professional.

The rare earth metals mining industry is one rife with issues. But is there a way to green up the business?

This could be why so many people ignore global warming.

The limited edition pieces are designed to give plastic waste a second life.

Our photo of the day reveals a butterfly of most beautiful contradictions.