As part of an ongoing series about the Maya Ka'an community-based tourism initiative, this was my first official day in the Mayan region, and it was certainly full of adventure.

This NGO is doing wonderful work to bring sustainable tourism into the mainstream. It's time to start planning your next vacation!

Katherine and Margaret share their tips for green travel.

There's an "epidemic" of unused vacation days in the United States. This startup wants participating companies' employees to trade them in for plan contributions, or booking flights and hotel accommodations.

From Hobbit holes to treehouses, these unique Airbnb havens promise a storybook escape.

From vintage trailers and tepees to mansions in the mountains, AirBnB has partnered with the National Parks Foundation for rentals near the country's natural treasures.

Plus, how to be more eco-friendly while traveling.

From geo-domes in Finland and treehouses in France to safari tents in the Washington woods, these glamorous camping spots promise some wintry wonderland adventure.

Confirming what previous studies have shown, new research from the Union of Concerned Scientists shows that the main threats to tropical forests are no longer from

The suit, brought in South Dakota court, seeks over a billion dollars in damages against ABC News -- even though ABC never originated the term and was just reporting what everyone else was calling it.

The meat vs. veggies debate is a lot more complex than it seems at first glance.

According to the research of author David Simon, the externalized cost of our animal food system totals about $414 billion per year, which is carried by all of us.

What nutrition labels do, and do not, tell us about what goes into our food

Under perfect circumstances, grazing cattle do sequester carbon, but most of the time that's not the case.

This city used to be a model for the future of biking in North America. Now it is just a deadly mess.

Actually, this is something every country needs.

Why not? Everybody else uses them for everything but biking.

If you're not into bar soap, here's an innovative option for liquid hand soap.

Otherwise, they proliferate to the point of making me crazy.

For everything from stained sinks and burnt pots to baked-on grime, this simple 3-ingredient formula is eco-friendly, zero-waste, and actually works.

Now's the time to tackle jobs you've been thinking about for months.

Created by minimalism expert Joshua Becker, it relies on the user's description of their own home, not a general house.

Every tiny apartment does not have to have an expensive Murphy bed.

Athanasia Leivaditou designs the perfect desk for all-nighters, described as 1.6 Square Meter of Life

Graham Phakos did, with an interesting design that does everything the expensive Italian jobs do.

Babies are small. They can occupy a small space.

This might be the perfect bed for a New York apartment.

Handcrafted with softwood, natural oils and waxes, this furniture unit makes a tiny, narrow bedroom feel much bigger.

No, you don't need to rush out and buy a bigger house if you've got more family members than bedrooms.

Inspired by bird wings, this unique wind generator is claimed to efficiently harvest energy, even from low wind conditions.

If you're interested in learning how to build your own renewable energy devices, this DIY vertical axis wind turbine is a great place to start.

The SolarMill, a 1.2 kW combination wind and solar energy system, will be sold in the U.S. for about $3000.

A new study says that placing turbines under these high, already-built structures could be an easy way to incorporate wind energy in areas around the world.

When wind speeds are higher than a turbine can effectively use, the extra energy is stored for when the wind slows.

The world's most powerful wind turbine to date backs up its massive size with serious power output.

One of America's fastest growing professions, wind turbine technician, attracts people with a unique set of skills, as demonstrated by climber and composer Jessica Kilroy.

There are only two northern white rhinos left, and they are both female; but now scientists have created two viable embryos and there is hope.

Do you have a grad about to turn that tassel around, or leaving high school behind for the big wide world? Toast this accomplishment with one of the 10 earth-conscious gifts in this guide -- from major purchases, like cars and jewelry, to simpler mement

Do you have a grad about to turn that tassel around, or leaving high school behind for the big wide world?

Whether you're sending your oldest child off to his first day as a freshman or helping your youngest prepare for the beginning of her senior year, making sure your kids have the green gear they need for a successful year at college is no small task. This

Whether you're sending your oldest child off to his first day as a freshman or helping your youngest prepare for the beginning of her senior year, making sure your kids have the green gear they need for a successful year at college is

Starting in September, I embark on a nationwide book tour for my new book entitled Urban Green: Architecture for the Future. The tour will take me to more than 20 universities and colleges across

University of North Texas has build a LEED Platinum stadium to be the envy of other college campuses.

College students make waves for clean energy at IU, UK basketball games.

Toast your grad's entry into the big wide world with durable, chic, and useful goods like a practical tote bag, an electric scooter, and a life-changing journey to save lions.

Students organize a massive call-in to demand the school transition away from coal.

From boosting focus and cleaning the air to improving wellness in general, these easy indoor plants are a great addition to dorm decor.

Jake Wolf took this photo just outside of Grand Lake, Colorado.

Who said politicians never did anything good?

Ever wondered what it's like to live in a renovated van? Here is one company that rents DIY van conversions out.