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The good, the bad and the ugly about solar-powered aircrafts

Introduction: At a time when aviation industry is grappling with the rising costs, limited availability and environmental burden of the aviation fuels, the idea of solar-powered airplanes provides a much-needed lifeline. Researchers have been able to

solar-powered aircrafts

Seven Year Pen

Hidden within The 7-Year Pen is a jumbo ink cartridge. This large reservoir allows it to hold substantially more ink than a traditional ballpoint pen. The Swiss-made 7-Year Pen can write an average of 5.5 feet per day for 2,555 …

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