Start a company, slowly build it into a tech conglomerate and let it slowly absorb smaller companies each in different sectors of business. With these companies I make them research energy solutions and batteries. I then with the massive wealth I have acquired starting buying huge swaths of land, specifically rainforests. I then make them private property with only access being conservationists and documentary filmmakers. By the time the land deals are done my new energy solutions should be done. Installing these new green energy plants around the world into my factories and offices I slowly shift the world towards better energy efficiency and cleaner consumption. Along with protecting our natural wonders. With energy locked down I would then switch to creating agricultural improvements, allowing farmers grants to start increased food production. Lastly I would create massive spruce and pine farms in Canada, using these farms I would steadily switch from using steel to Cross Laminated Timber, allowing for structures to be more eco-friendly. Then finally, I kill all humans that have the name Josh and Jane.