BERLIN, Germany (Reuters) — A new unmanned aerial vehicle from Beijing-based technology company PowerVision hopes to shake up the drone market with their eye-catching egg-shaped design. When stationary, the PowerEgg drone looks a bit like an ostrich egg with no obvious signs of the ability to fly. But when switched on, four rotor blades emerge from the rugby ball-sized device to propel it skywards at a speed of 5 metes-per-second. The makers say it is perfect […]