Home of the upcoming climate change conference, Copenhagen is #4 in this great bicycle city photo tour series. With about 55% of trips being by bicycle, Copenhagen is an amazing place to visit or live if you like bicycling.

The photos to follow give you a taste of this great bicycle city. From dogs on bikes to bikes on bikes, from bikes in ice to bike counters, enjoy these great bicycle photos.

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From bicycle lovers to lovers on bikes, bike art to art on bikes, the largest bicycle sharing program in the world to some of the smallest bikers, enjoy this bicycle city photo tour of Paris, France!

Paris doesn’t have a long history as one of the best bicycle cities, but with the introduction of the largest bicycle sharing program in the world, bicycling in Paris has boomed and the city is becoming commonly associated with the bicycle now. Its whole culture is changing due to the bicycle’s increasing relevance in the city’s daily life.

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Naked bicyclists, folding bikes, balloon bikes, and more — enjoy this bicycle photo tour of Barcelona.

The third B in a row, Barcelona is next on this list of great bicycle cities (right ahead of Basel, Switzerland and Bogota, Columbia). As a dense city with a wonderful climate, Barcelona is naturally a wonderful place for bicyclists. However, a lot has been done to make it more so. The biggest carrot encouraging bicycling, by far, is Barcelona’s relatively new bike sharing program — Bicing. This is perhaps the best or second best bike sharing program in the world. It is one of a new generation of sophisticated, smart bike sharing programs. Read more about it on page 2.

Beyond Bicing, the city is also working on creating new bicycling routes and bike parking and it hosts fun Bike Week celebrations every year in May. Also, it has been creating better infrastructure for bicyclists due to so many more people bicycling within the past few years. It is transforming itself into a truly world-leading bicycle city.

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NASA has released the first ever images of mysterious polar night clouds that form 50 miles above Earth’s surface, and says that they might be linked to global warming.

The startling images were captured by NASA’s “AIM” satellite (Aeronomy of Ice in the Mesosphere), and show night clouds above 70 degrees north latitude on May 25. Since then, eyewitnesses on the ground have reported seeing the formations on June 6 over Northern Europe (see image after the jump).

When viewed from space, the mysterious clouds are known scientifically as Polar Mesospheric Clouds, or PMCs, when seen from the ground they are called Noctilucent or “night-shining” Clouds.

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As shown year after year, public transit is a key factor keeping our planet from warming much further than it already is! It is also one of our best bets for slowing and eventually stopping global warming in the future. Beyond that, public transit helps the environment, the economy, and you in many other ways as well.

An organization working for you to increase and improve public transportation and to fight global warming, smog, excessive traffic congestion, water pollution, hours lost from home, stress, road rage, and your car becoming your home needs your help now.

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Hats say a lot. They can show what we do for a living, what teams we root for, even what part of the country we live in.

Today, your hat can make another statement: Express your support of a cap on carbon pollution by showing EDF your carbon cap.

Please submit your photo today. We’ll feature Action Network favorites in our upcoming Earth Day video.

With climate legislation moving in the House, there is no better time to show your full support of a cap on carbon pollution.

It’s easy and fun to take part. Here’s all you need to do:

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The iJET technique is so easy and cheap to carry out that it could revolutionize access to solar technology in the developing world.

In a recent radio interview (audio), Nicole Kuepper, a 23 year-old PhD student at the University of New South Wales, explained the process.

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Cool looking contraption, huh? What you’re looking at is Finavera Renewables’ latest project in scalable wave power technology. If you think that picture is pretty cool, you’ll enjoy the animation: This story contains additional media. Click here to view the media.

Photo: U.S. Minerals Management Service

Bicing — Great (3rd Generation) Bicycle Sharing Program

Bicycle sharing programs started out as simple systems in which bikes were painted a certain color and then made available for use for free by anyone in the community, to be picked up or dropped off at undetermined places. The problem with these systems, naturally, was that there was no accountability or security and the bikes would eventually disappear.

In recent years, some more sophisticated programs have been developed in various European countries. One type of more sophisticated program requires that a cash deposit be made to borrow a locked bike and then once the bike is returned the deposit is returned. More sophisticated than this, a few newer programs (such as Bicing) were recently launched in which a customer must become a member of the program to borrow a bike and then the person is able to unlock bikes with their membership card through a fairly sophisticated computer system (similar to carsharing programs such as Zipcar and Flexcar).

Barcelona’s system is one of the most successful to date. It is interesting because it is only open to Barcelonians — not tourists. They can pay a yearly fee of 30 Euros and then get a bike for free for half an hour anytime. If they want it for more than half an hour, they pay 30 cents per every extra 30 minutes. They can return bikes to any of the hundreds of bike parking “stations” around the city. The system started with 100 stations and 1,500 bikes. The system blew-up, was hugely popular, and today it consists of 6,000 bikes and 375 stations.

The system cut into the transportation infrastructure for cars a little bit, and generated some controversy at the beginning, but it seems that people have come to realise more and more the benefits of bicycle transportation for their city. Similar to Bogota, Barcelona has transformed its city into a more bicycle and pedestrian focused place, and as a result “the number of cars coming into Barcelona (has been reduced) by 15 percent.”

Enjoy the photos and YouTube video of this great bike sharing program below!

This post contains additional media. Click here to view the full post.
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Image Credit 1: synes via flickr under a Creative Commons license
Image Credit 2: Paco CT via flickr under a Creative Commons license
Image Credit 3: Altamar via flickr under a Creative Commons license
Image Credit 4: frodrig via flickr under a Creative Commons license
Image Credit 5: almogaver via flickr under a Creative Commons license
Image Credit 6: JesuSarmiento via flickr under a Creative Commons license
Image Credit 7: Maufdi via flickr under a Creative Commons license

Beautiful Places to Bicycle

Barcelona is beautiful, and that makes bicycling there that much better. Rather than close yourself in a car, tram, or bus, you can enjoy the beauty and atmosphere of Barcelona better on a bike.

Image Credit 1: ras263 via flickr under a Creative Commons license
Image Credit 2: JorgeMiente.es via flickr under a Creative Commons license
Image Credit 3: _Asane_ via flickr under a Creative Commons license
Image Credit 4: lcrf via flickr under a Creative Commons license
Image Credit 5: Juan Carlos! via flickr under a Creative Commons license
Image Credit 6: Plug 1 via flickr under a Creative Commons license
Image Credit 7: Tuquetu via flickr under a Creative Commons license
Image Credit 8: JaulaDeArdilla via flickr under a Creative Commons license

Bikin’ in the Rain, Kids on Bikes, & Men in Suits

Image Credit 1: vitelone via flickr under a Creative Commons license
Image Credit 2: vitelone via flickr under a Creative Commons license
Image Credit 3: vitelone via flickr under a Creative Commons license
Image Credit 4: vitelone via flickr under a Creative Commons license

Folding Bikes

Easy to travel with or bring to work, these folding bikes are very popular in Barcelona. (There’s one on page nine, too.) The photographer for the first picture here writes: “Barcelona seems to be something of a magnet for Bromptons and other types of folding bikes. It recently hosted an event specifically for Bromptons.” A few artistic pictures of these super utilitarian bikes for all of us to enjoy:

Image Credit 1: identity chris is via flickr under a Creative Commons license
Image Credit 2: Brújulo via flickr under a Creative Commons license
Image Credit 3: . SantiMB . via flickr under a Creative Commons license
Image Credit 4: Juan Carlos! via flickr under a Creative Commons license

Big Bike Taxis

Image Credit 1: uayebt via flickr under a Creative Commons license
Image Credit 2: uayebt via flickr under a Creative Commons license
Image Credit 3: jose_gonzalvo via flickr under a Creative Commons license
Image Credit 4: james. via flickr under a Creative Commons license

Balloons on Bikes

Image Credit 1: karuleta* via flickr under a Creative Commons license

Naked Bicyclists

Mix Spain and bicycles and you get a few naked people! What a free look this picture has.

Image Credit 1: sheenabizarre via flickr under a Creative Commons license

Moving or Shipping Bikes & Critical Mass Bike Rides

Image Credit 1: Liz Castro via flickr under a Creative Commons license
Image Credit 2: funkyfabriz via flickr under a Creative Commons license

Flowers or Pac-Man in the Bikes Lanes?

At first, I thought these were tulips. Then, I realized (partly by seeing the title of the second one) that it is actually a tribute to pac-man! Interesting bike lane art.

Hope you enjoyed the photo tours of Basel (Switzerland), Bogota (Columbia), and Barcelona (Spain). To keep yourself updated on the next seven photo tours, keep your eye on EcoWorldly or even subscribe to its feed or email list. Have something extra to add? Comment below!

Image Credit 1: Ibán via flickr under a Creative Commons license
Image Credit 2: Ibán via flickr under a Creative Commons license

Justyn’s work is so interesting and original because he uses recycled photographs (mostly doubles and blurry snapshots collected from Craigslist) and a paper shredder to create his signature look.

I love this idea to use a paper shredder to cut the paper, just think of the possibilities!

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