Even on busy rail networks, the gap between lines can spend much of its time doing little but face skyward, so why not put that space to good use? Swiss startup Sun-Ways is looking to do just that by ...

A Carnegie Mellon University solar-powered robot has demonstrated a Sun-synchronous navigation concept that could be useful for long-term exploration of planets and moons. The idea is for the robot to ...

Traditional solar fails in the windswept north. Two Swedish inventors are betting on aerodynamic resilience to solve the ...