You probably should crack open a window or two :D An idea that stuck with me was that everything around you that isn't natural was made by somebody. Buildings,

You probably should crack open a window or two :D An idea that stuck with me was that everything around you that isn't natural was made by somebody. Buildings, roads, sewer grates, televisions, whiteboard markers, candy wrappers, all of them were made - directly or indirectly - by humans. That's a lot of things!