What is the distance between Boston and Gibraltar?

What tools where used to make Stonehenge? About how much water flows over the falls every minute? Who were the slaves that built the roman Colosseum? What is the name of the city where the Wizard lives in the Wizard Of Oz? Which two oceans is the bering sea adjacent to? The path that river follows is called its? How did Edwin Robinson bridge the gap between to literary eras? Type of land in Appalachian region? What continent is the Great Pyramids found? Why are there eight locks connecting Lake Erie and Lake Ontario? What benefits have resulted from efforts to control the Nile? Does the amount of water in the ocean change? How old is the Great Wall of China in years? What is the location of Illinois relative to the Mississippi river? Is Stonehenge in Cornwall? Why sea water is salty than rain water? What country is closests to the carteret islands? What is Dr. Denton checking the water at the high lake for? When did Vic Rivers die? What ocean borders Europe?