What if there was no oil? Without oil, cars may become a relic of the past. Streets may turn into public community centers and green spaces filled with pedestrians. Bike use might increase as more people ride to school or work. The Earth will begin to heal from over a century of human-caused climate change. Can a car run without oil? The presence of oil and its distribution is absolutely crucial to an engines continued operation. Engines can work without oil, but the effect is so damaging they are only capable of running for less than 30 minutes until failing...

How did steam power impact factories and the northern economy? The steam engine turned the wheels of mechanized factory production. Its emergence freed manufacturers from the need to locate their factories on or near sources of water power. Large enterprises began to concentrate in rapidly growing industrial cities. How did the railroad affect the economy? Every year, railroads save consumers billions of dollars while reducing energy consumption and pollution, lowering greenhouse gas emissions, cutting highway gridlock and reducing the high costs to taxpayers of highway construction and maintenance. Freight railroads mean more jobs and a stronger economy. How did railroads...