Electricity from coal is downright expensive compared to power from a new solar plant. ->
A new device from Fujitsi converts ambient energy from either heat or light into electricity.
From buying a Christmas tree to lighting it, saving energy is not difficult.
A new line of clothes come with its own solar panels to charge small electronics in your pocket.
It's always sunny in low-Earth orbit, so what better place to look for a source of solar energy?
