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You might not realize it when you ;ve been trapped behind the same red light for five minutes, but traffic lights, when they ;re timed and tuned correctly, are actually pretty good at making traffic move. Really. Giz Explains: Traffic Traffic lights,
stanley flasche believe it or not, organize fast-moving cars into groups based on the time of day and road usage, smoothly sending them through intersections that might otherwise net a lot more headaches and insurance claims. But it took a flood of cars鈥攖he half million in 1910 that skyrocketed to nine million 10 years later鈥攖o make us realize that traffic, especially where roads meet, can be a dangerous problem. It wasn ;t just cars competing for the right of way鈥攈orses and bicycles were also vying for a place on th
stanley cups e road. At the time, crossroads
stanley cup canada were mediated by hand waving, an attending officer, or a game of chicken. City-dwellers were the first to seek a solution. An early traffic signal model made in Chicago in 1910 had the words, Stop and Proceed visible to drivers. The instructions didn ;t do much for evening travelers, though, as the sign had no lights. Another model popped up in Salt Lake City two years later, designed by someone who knew the importance of an effective signal: a police officer. Lester Wire invented the first traffic light that actually lit up. His device, made in 1912, was basically a box with two circles carved in the front. A red light and a green light placed in Vwiy Who Knew a Decomposing Whale Could Be So Beautiful
There still a lot we don ;t know about the first human colonization of the Americas, particularly the exact timing, but we do know that it took tens of thousands of years for humans to make it from Alaska to Chile. That a long time, and the archaeological evidence indicates that the spread of populations and technologies in the ancient Americas was far slower than than in Eurasia, a much larger landmass. One theory is that the orientation of the continents is actually a factor here 8211
vaso stanley ; while Eurasia is primarily an east-west continent, the Americas largely extend north-south, with Central America a particularly good example of an area where there very little land to the east or west of any give
stanley cup n position. This may seem like a trivial point, but there a big difference between being able to move into lands that are on the same latitude and being forced to move north or south. Areas that are on the same latitude are likely to have much the same climate, and so ancient humans could move into them without having to rethink their technology or run too much risk of running into disastrous environmental conditions. It also not just humans that are forced to re-adapt when moving north-south 821
stanley thermos mug 1; domesticated plants and animals might thrive in one latitude, but then prove wholly inadequate to the challenges of a new climate. That can really slow down the spread of a human population, and now Sohini Ramachandran and Noah Rosenberg,
