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I've had the pleasure to visit the beautiful island of Tenerife a few times, which is the largest of the Canary Islands. Being a very mountainous island, it's a difficult place to build a railway system, but they're catching up with a new tramway line which serves the island's capital, Santa Cruz de Tenerife and the nearby town of La Laguna. The company that is building it just got the permission to install a very large array of photovoltaic panels to produce electricity directly from sunlight,

The last city to ressurect tramways has been Buenos Aires, Argentina (with an Alstom Citadis model in the picture). Tramways (streetcars in North America) have made a huge comeback in recent years. During the '50s, trams was replaced by diesel buses, which offered greater flexibility at that moment and were considered far superior. However, buses have a huge drawback called tailpipe emissions and metropolitan areas, which are always more congested, were in the search of better solutions.