Among the many problems at global scale there is no more fundamental problem than overpopulation. Systems (mainly political, social, and religious) that are over-protective end up maintaining (directly and not always unnintentionally) the existence of unneducated [poor] classes. These peoples are unable to take responsability for their condition, in terms of access to basic resources. At local scale, govenments spend too much money in bureaucratic organizations (e.g. United Nations) and not enough into education, health, etc. At global scale more resources are needed per capita, waste production also increases, and therefore we create problems like extreme exploitation of natural habitats for raw materials and energy (which in turn result in conservation issues), too much production of wastes (resulting in problems such as ozone layer depletion in previous decades, global warming), and higher rate of disease spreading (epidemics and pandemics). We are also forced to have political systems that are focus on the benefit of a nation as an entity (nothing wrong in it!), but that are not effective in the context of individuals (e.g. like the communist china, the former soviet union, and the "social" wave in current latin-america).