Only peaceful minds do everything

I am too young to discuss this.  I did not know it is correct or not to write this.  Any way this affects the environment and so our mother planet earth.  Whatever it is which affect the environment we should take a conversation about it.  One Sunday while I am reading a newspaper my grandpa told me a story about the development of Japan.  I leave all other things except the environmental degradation and pollution.  I wrote up to my level what I understand from the story told by my grandpa. War causes pollution in many ways.  Air pollution due to explosives, starvation due to war and so human death leads to an environmental pollution.  Atomic explosion leads to a big challenge to the environment.  Not only the present generation the future generation also affected by those wars. Misunderstanding and lack of humanity is the only reason for wars etc.  Each and every one in the world is the children of god and all are equal.  Then why are they fighting with each other.  If one spent time and economy for wars etc. How can one find time and fund to preserve our earth?  What will the position of future generation in future?  What will they do without pure water and environment? If there is no war one may spend their funds to education and in many development projects.  Our Yoga master also told us that only peace minds do all adventurous things.  Yes if there is no peace how can one develop their mind in environmental protection?