H is for Humanity, Habitats, Health, Habitats, and HIPPO! Project H, an organization that promotes, inspires, and delivers humanitarian product design, is funding 50 Hippo Rollers for a series of 17 ...

One of the first “roller-coaster” rides in the U.S. was actually a short coal railway in Pennsylvania that hauled coal downhill between mines and used mules to bring the empty cars back up the hill.