Can someone answer how water vapor in the clouds gets positively charged? I'm thinking that the Earth's magnetic field is at play when lightning strikes. The lightning maybe attracted to the giant steel magnet under our feet. How do clouds get superfluous electrons gathered in them? Could it be all the heat from the sun charges the water molecules? and not friction? Could you build a device with a magnet that attracts electricity from water somehow? Perhaps simply a magnet inside a box pressured with steam that 's spinning and a magnet below the box to attract electricity?