The Plantbook or the 'oxygenated notebook', a concept designed by Seunggi Baek and Hyerim Kim, is a laptop whose technology is largely inspired by the bamboo plant that derives its nutrients when soaked in water. The design of Plantbook is amazing and unique. It comprises of a cylindrical structure with two rollout screens (for the keyboard and monitor). The green color of the notebook is a representation of its 'green' capabilities. There is no need for you to charge the notebook as it uses hydrogen generated by electrolysis of water as its energy source.
The Plantbook when rolled back into its cylindrical form gets placed inside a beaker full of water to soak it, thus generating hydrogen via the process of electrolysis and releasing oxygen. The energy required for electrolysis is provided by a solar heat plate that is affixed at the top of the device. Much like a plant, the Plantbook produces energy releases oxygen. Furthermore, the Plantbook has a strap or a hand ring affixed to the top that has a leaf-like shape with green LED; it indicates the extent to which the battery has been charged. It is incredible to see how much energy we can generate through natural means - without having to cut down trees, eat into our limited oil and coal reserves, etc. 
The Plantbook definitely seems to be a path-breaking concept.
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