The Science of Daylight Savings Time

This weekend, most states will "spring forward" for the beginning of Daylight Saving Time (DST), which starts at 2am. Benjamin Franklin first conceived of DST in 1784, while serving as U.S. ambassador to France. In a nutshell, it's a way to manipulate time to accommodate the longer daylight hours.

But did you know....

Each U.S. state and territory is free to ignore DST, so residents of Arizona (except those on the Navajo Nation), the Virgin Islands, Hawaii, and Puerto Rico, for example, won't change their clocks this weekend.