Medellin, Colombia: This city's name used to strike fear in peoples' hearts. In the 80s and early 90s, it was known as the drug capital of the world and the most violent city on the planet.

Moving 1.7 People Every Single Day!This is how bus rapid transit (BRT) should be! TransMilenio's 104 stations allow the citizens of Bogota (in Colombia) to get to work, move around the city, run errands... All of that very conveniently and quickly -

In a pretty self-explanatory piece, Bogota-based Unodot studio executes a simple useful idea for small spaces.

The city's new mayor has announced an ambitious project to build a park aimed at providing new public spaces and controlling sprawl.

This simple, foldable bee box attracts roaming bee swarms with a pheromone lure, and helps beekeepers safely relocate bees.

The Africanized bees slipped in through a small opening, set up home, and were busy making honey.

Did you know honey has its own sound? Using honey and other tools, this bee enthusiast wants to raise awareness about bee colony collapse disorder through music.

One of the rarest insects in the world, the Wallace’s giant bee, has been found in Indonesia.

And the air outside in urban London is pretty awful.

But regardless of what green initiatives they implement, tourists must be willing to change, too.

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.

Don't be in such a hurry! Here's why you should slow down and visit the quirky landmarks that so many small towns have to offer.

World consumption of animal protein is everywhere on the rise. Wherever incomes rise, so does meat consumption.

And then they yell at cyclists for not following the rules.

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

Ten years after Vancouver's Burrard Street Bridge bike lanes opened, it is no longer controversial.

Buell motorcycles are fast, beautiful and expensive. How does Erik Buell's e-bike compare?

A deeper look at Toronto's Bloor Street bike lanes finds more shoppers spending more money.

Keeping your bike in tip-top shape means regular maintenance, preventative measures, and the occasional on-the-road quick fix.

Yet another study weighs in on the most efficient way to clean dirty dishes.

Listen to scientists, not industry lobbyists, and just keep cleaning.

A lovely lounger made from reused trampoline parts.

Babies are small. They can occupy a small space.

Secrets of bed bug success can be read in their genes -- can the knowledge help you fight bed bug infestations?

To gain more space, this apartment's redesign puts everything in the wall.

The WindPax wind generator fits neatly into a backpack for hiking or can be used in the backyard too.

The Nautilus shell-shaped turbines could fit on rooftops of houses or buildings in urban environments.

Lightweight, collapsible, and quick to deploy, this little wind generator might be a viable off-grid portable power source in places where solar isn't appropriate.

The resin reduces the energy needed to manufacture turbine blades and allows them to be recycled.

Mountain gorillas have become the only wild apes whose population numbers are known to be improving.

He’s a fierce defender of his family and helped nurse two of his offspring back from leopard attacks. He likes to nap with his feet in the air, and he hums while he eats.

In a compelling new documentary, The Flood, Angela Bassett narrates the story of the life in one of the world's last great wildernesses.

New short narrative film strives to deepen the global discussion around the illegal wildlife trade.

Fashion designer Alexander Julian has clearly had enough of the University of North Carolina's aqua graduation gowns, he's gone and given his alma

Big surprises can come in little packages - and that's what I found when I visited Winthrop University during my book tour stop at the school. The campus is located just south of Charlotte, NC in

We've scratched the surface of Sierra magazine's Cool Schools list on Treehugger before, but this time I've decided to dig into one of the schools so we can learn more about what

Sierra magazine released its 2012 Cool Schools list, and UC Davis took #1 - let's learn more about them.

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

The Post-Landfill Action Network, launched at the University of New Hampshire, challenges campuses across the continent to start tackling waste seriously.

It's the eternal struggle for anyone tasked with feeding themselves.

Ruling represents the first time that a coal mine has been rejected because of the failure to adequately consider and disclose the impacts that a mine would have on climate disruption.

Andrew Michler figures it out in his own home in Colorado.

Another good reason to move to Colorado.

This kind of trailer means you can eliminate the head-banging sleeping loft.

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

A tour inside a solar-powered bus conversion that makes you feel at ease.

The newfound fossils shed light on the early evolution of one of the planet’s most mysterious amphibians.

A toilet is just the working end of a much larger system that can have a huge impact on society.

Here's the drill on the Earth Drill toilet.

I really don't want to crap all over this new toilet design, but it is too complex, too expensive and no, it won't charge your phone.