Human Use
The use of rocks has had a huge impact on the cultural and technological development of the human race. Rocks have been used by humans and other hominids for more than 2 million years. Lithic technology marks some of the oldest and continuously used technologies. The mining of rocks for their metal ore content has been one of the most important factors of human advancement, which has progressed at different rates in different places in part because of the kind of metals available from the rocks of a region.
Read more about this topic: Rock (geology)
Famous quotes containing the word human:
“Envy and jealousy are the private parts of the human soul. Perhaps the comparison can be extended.”
—Friedrich Nietzsche (1844–1900)
“A lock-jaw that bends a man’s head back to his heels, hydrophobia, that makes him bark at his wife and babes, insanity, that makes him eat grass; war, plague; cholera, famine, indicate a certain ferocity in nature, which, as it had its inlet by human crime, must have its outlet by human suffering.”
—Ralph Waldo Emerson (1803–1882)