You can build an advertisement tracking system unilaterally and release it to the world. You don't need permission to do so. On the other hand, fixing the clim

You can build an advertisement tracking system unilaterally and release it to the world. You don't need permission to do so. On the other hand, fixing the climate, recycling, agriculture, the political, system, etc. require you to convince other people to change their beliefs and habits. You also might need to raise prices on things they hold dear (e.g. carbon tax) or tell them to stop doing something they find convenient. These are hard problems.