n terms of cost effectiveness. For instance, when tank after tank are coming in for ammunition rearming the job can be done without costly humans getting tired and needing fill-ins. Many scientists are now using robots to explore volcanoes, which have the potential to erupt ("Reaching"). The robots are sent down on cable and later take soil samples and test for volcanic pressure ("Reaching"). This is helping the world to better understand and predict volcanic eruptions ("Reaching"). It may later lead to the prevention of many volcanic disasters. Without these robots many people would have to put their lives to risk for something as stupid as a nuclear w
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