You may have thought that trees have a finite number of uses: shade, timber and helping to maintain the world's oxygen levels. But helping to charge your mobile?
An Israeli company specializing in solar energy, Sologic, has taken inspiration from the forest with its 'eTree'. Standing four and a half meters tall and with solar panels acting as an artificial 'canopy', the eTree can produce an average of seven kilowatts of power daily, according to Sologic.
Equipped with USB ports for cell phones and other devices, the eTree also provides free Wi-Fi -- and has a built in water fountain.
Michael Lasry is the founder and managing director of Sologic. "Trees… [are] a symbol of life," he told Sustainable Energy. "With the shade that it creates, so it gives the first application to the communities: to sit down and to relax in the shade."