Immersive displays brought 19th century spectators to far-off places and distant battles. The way they portrayed history, however, was often inaccurate.
People have been planning for this month's total solar eclipse for years. They aren't the first to do so: the Victorians pioneered eclipse tourism.
We often picture the Himalayas as pristine. In reality, Everest's snows cover empty oxygen tanks, wrappers, cans, and an array of debris left behind by climbers.