Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all.
The great constitutional corrective in the hands of the people against usurpation of power, or corruption by their agents is the right of suffrage and this when used with calmness and deliberation will prove strong enough.
The hair on our head serves as a heat insulator and coolant, it also helps to protect us from the sun's UV rays. The function of hair in other locations is debated as we still require clothing to keep us warm unlike other mammals.