Muslim Town in the south of India, millions of mobs between rice fields, crossroads of trade silver, the core of global software industry and a spectacle of light in the Golconda Fort: this is Hyderabad. For a western guy, this is not a well-known cosmopolitan, but the area contains 7.7 million residents (7 times Amsterdam). In other words: this city is grotesque. Some years ago I talked with a...

WHAT'S IN A BATTERY? There are two different types of batteries: primary and secondary. The chemical reactions that occur in primary batteries are irreversible, the stored energy can be used only once making the battery disposable. The chemical reactions that occur in secondary batteries are however reversible. These batteries can be recharged many times and gradually lose the ability to ta...