Just give me the convincing evidence and I will do what I can to protect the Earth that my children will inherit. By contrast, you don't need to convince me that there's a desperate world-wide problem with pollution for instance. Mercury, cadmium but the list is seemingly endless. Where is the international disquiet on this front? Meanwhile CO2, the plant food which if its level dropped below around 125ppm all life on this planet would begin to die irreversibly and has greened the planet very significantly in the last few decades, is regarded officially as a pollutant.