They don't, as such. The thing is, as friction in fast rising air causes static electricity, it usually polarize positively its base and negatively its top. By induction, the positive charge creates a negative charge in the ground under. The charge is in everything with a mass, a tree, your house, or … a kite. read more
How to Attract Lightning By Contributor; Updated April 24, 2017 To many people, the image of Benjamin Franklin standing in the middle of a thunderstorm holding a kite with a key tied to the end is the first thing that comes to mind when they think about ways to attract lightning. read more