Apparently, there were some private citizens from the USSR who were allowed into the U.S. for travel during the Cold War. But they couldn't just visit anywhere they wanted.
This map, from a post at Slate's Vault blog, shows the no-go zones, shaded in green. Some of this is quite funny — gee, guys, I wonder what you're keeping hidden out in rural Nevada? Another interesting point: Soviets could visit Kansas City, Kansas, but not Kansas City, Missouri. Which could just be a pretty good joke, on our part. The fun stuff is all on the Missouri side.
EDIT: In the original version of this post, I'd mentioned that Kansas had once been home to many, many missile silos, and speculated that this might be why so much of that state (and the Dakotas) was off-limits to Soviet travelers. But, Cold War historian Audra J. Wolfe contacted me and pointed out that there were no missile silos at the time this map was made, because there were no Intercontinental Ballistic Missiles. So why ban the Ruskies from Kansas? Wolfe isn't entirely sure. She speculated that it might have had something to do with limiting access to public lands managed by the Bureau of Indian Affairs or the Bureau of Land Management. It also could have been tied to the presence of Strategic Air Command bases in the state. And there were tons of Atomic Energy Commission-owned sites scattered all over the U.S. — it's hard to keep track of where they all were.
Of course, Wolfe also said that there wasn't always a clear logic behind the decisions about which parts of the country were made off-limits to Soviet citizens. For instance, much of our coastline was off-limits for no other reason than the fact that much of the Soviet coast was off-limits to Americans. "The main premise is 'strict reciprocity'," she wrote in a message to me. "X% of Soviet coasts are off-limits, therefore x% of US coasts are off-limits, too." So there, one might add.
Avogadro’s Number is 6.022140857 × 1023. That’s how many atoms are in 12 grams of carbon-12. One mole of anything has one Avogadro’s Number of elementary particles in it. In this video, the Action Lab Man repeats the words “Avogadro’s Number,” quadrupling the audio track each time until he reaches 6.022140857 × 1023. Each time […]
Stephen Hawking’s final paper that he and his colleagues completed just days before his death has now been published. It’s titled “Black Hole Entropy and Soft Hair,” co-authored with Sasha Haco, Malcolm J. Perry, and Andrew Strominger, about the black hole information paradox. Here is the abstract: A set of infinitesimal VirasoroL⊗VirasoroR diffeomorphisms are presented […]
Caltech researchers developed the illusion above to illustrate postdiction, a sensory phenomenon “in which a stimulus that occurs later can retroactively affect our perceptions of an earlier event.” From Caltech Matters: “Illusions are a really interesting window into the brain,” says first author Noelle Stiles (PhD ’15), a visitor in biology and biological engineering and […]
Speed reading isn’t just an innate skill possessed by a lucky few. Anyone can learn to speed read, and the benefits are endless. The brain can process more information than most people have time to soak up, but you can make that time now with the 2018 Award-Winning Speed Reading Bundle. The first half of […]
Sure, you could use the same old PowerPoint templates for your next business presentation. It’s not like you have bosses or investors to impress. Oh wait, you do? Time to augment that slideshow with Slideshop – the presentation tool that can individualize your pitch while saving you time. Compatible with PowerPoint, Keynote and Google Slides, […]
Multinational companies have used the no-nonsense methodologies of Six Sigma and Lean Six Sigma to oil a smooth-running operation for years. What is it? Six Sigma (and its offshoot, Lean Six Sigma) apply the principles of science to business, teaching managers to methodically target waste, maximize output and streamline the flow from producer to consumer. […]