CARACAS, Aug 19: The 'First Global Challenge 2018' featured the next generation of young engineers and robotics technicians from 193 countries.Aged 14 to 18, the 696 competitors were challenged to create a robot capable of activating sustainable energy sources and energizing power plants, while including an electrical transmission network optimally.The young engineers were asked to determine the strongest energy generator: solar energy, wind turbine, a nuclear reactor, and a combustion plant.