The steepest grade on U.S. main-line track is at the small town of Saluda, on a Norfolk Southern route between Spartanburg, South Carolina, and Asheville, North Carolina. The grade goes on for three miles at a slope of 4 or 5 percent. Trains have not been running on the line since 2001, but the tracks are still maintained.
For those who've never experienced a sunrise in the rural Midwest, it's roughly as soft and romantic as someone's abruptly hitting the lights in a dark room. This is because the land is so flat that there is nothing to impede or gradualize the sun's appearance. It's just all of a sudden there.
Joyous Exploration. This is the prototype of curiosity—the recognition and desire to seek out new knowledge and information, and the subsequent joy of learning and growing.
Deprivation Sensitivity. This dimension has a distinct emotional tone, with anxiety and tension being more prominent than joy—pondering abstract or complex ideas, trying to solve problems, and seeking to reduce gaps in knowledge.
Stress Tolerance. This dimension is about the willingness to embrace the doubt, confusion, anxiety, and other forms of distress that arise from exploring new, unexpected, complex, mysterious, or obscure events.
Social Curiosity. Wanting to know what other people are thinking and doing by observing, talking, or listening in to conversations.
Thrill Seeking. The willingness to take physical, social, and financial risks to acquire varied, complex, and intense experiences.