Paris rooftops are becoming home to beehives that may help reverse declines in honeybee populations.
England's Lake District becomes the first UK National Park to be recognized as a World Heritage by UNESCO.
Swiss organizations are getting together to involve more hikers and others in cleaning up mountains, lakes and rivers.
Rome is the city of fountains, but this year's drought and needed repairs to the system will make for a dry summer.
This time, the car-free zone is the whole city, as Paris gives up most motor transport for a day
Sea Bubble water taxis proposed for Paris get a trial run on the Seine in hopes of going into service soon.
A small Greek island plans to cut itself loose from carbon-based power and set an example.
Sweden's considering a per-ticket tax on airlines to discourage travel and reduce carbon emissions—but the idea is under attack.
Norway, a world leader in electric transportation, is taking another step with an all-electric ferry to link towns along its fjords.
Copenhagen's success at getting people out of cars and onto bikes has led to two-wheel traffic jams. New signs are aimed at helping riders avoid them.
Marilyn Jones takes us to a sanctuary that rehabilitates injured seabirds and works to raise awareness of the perils they face.
Scientists in Spain are using new technology to track the movements of whales and other endangered marine mammals.
Berlin has ambitions to follow Paris and New York in creating urban pedestrian spaces, but its plan for Unter den Linden is raising questions.
An art installation that accompanied the Paris Climate Conference serves as a reminder, and also mirrors its surroundings.
What to do with it—in this case, human waste—has led to some unusual recycling projects in Italy and Denmark.