Why Time Flies

Have you ever noticed how older people keep mentioning that time keeps moving faster and faster? It's because we perceive time relative to the 'absolute' time we can compare it to... When you are 4 weeks old, a week is a quarter of your life. By the end of your first year, a week is just a fiftieth of your life. By the time you turn 50, a whole year will be a fiftieth of your life. This theory was first put forward by Paul Janet in 1897. Like many things, this will require some patience to get through. But in the end it'll be over faster than you thought or hoped it would be. Albert Einstein said about the perception of time, that 'an hour spent in the company of pretty girls passes more quickly than an hour spent in a dentist chair'. Waiting 24 days for Christmas at age 5 feels like waiting a year at age 54. According to this theory, assuming you'll become 100 years old, half of your perceived life is over at age 7. Did you notice how much faster the 10th year scrolled by than the first?

Timelapse: Landsat Satellite Images of Climate Change, via Google Earth Engine TIME and Space | By Jeffrey Kluger Editors note:On Nov. 29, 2016, Google released a major update expanding the data from 2012 to 2016. Read about the update here. Spacecraft and telescopes are not built by people interested in what’s going on at home. That changed when NASA created the Landsat program, a series of satellites that would perpetually orbit our planet, looking not out but down. Over here is Dubai, growing from sparse desert metropolis to modern, sprawling megalopolis. It took the folks at Google to upgrade these choppy visual sequences from crude flip-book quality to true video footage. These Timelapse pictures tell the pretty and not-so-pretty story of a finite planet and how its residents are treating it — razing even as we build, destroying even as we preserve. Chapter 1: Satellite Story | By Jeffrey Kluger It’s a safe bet that few people who have grown up in the Google era have ever heard of Stewart Udall. But in 1966, Udall and his staff had an idea. 1 of 20 1 of 14

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