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How and why lightening occurs?

Hello guys,
Welcome back.This post is related to thundering and lightening.We all have witnessed lightening in our lives and often wondered the reason behind it.Researchers use high speed and high definition cameras to record lightening and to know its insights.Well here we would discuss about it.It all starts with formation of clouds.When the earth gets heated,the warm air(lighter in density)moves up.After reaching certain height it cools down and converts to clouds.The air above it is much colder which causes formation of ice blocks.This ice blocks when move hapazard,collide with each other and generate electric charges.The upper portion being positive and lower being negative.This negatively charged clouds induce positive charge on ground and electric discharge takes place between clouds and earth.This electrostatic discharge occurs by breaking the insulation property of air.The air is an insulator up to a certain voltage around it.But when millions of volts of energy surrounds it,the air gets ionized and its insulation property breaks.Now it becomes a good conductor.Lightening will strike at places which accumulate maximum positive charges.For tall trees and buildings,the positive charges are at top.Thus it strikes in taller heights.Now I hope,I have been able to explain this concept to some extent.
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