We may never know how people in the distant past regarded the concept of time, at least before they left evidence in the form of symbols and language. But once they developed those things, we can chart how the world not only saw time, but tried to measure it and understand it. Quanta magazine has a timeline of some of the highlights in that journey, as they pertain to culture, physics, timekeeping, and biology. While all timelines end with "now," we are sure to learn more about time and its nature in the "future." -via Damn Interesting