 In
1961, a naval aircraft spotted something remarkable in the
Arctic during a routine aeromagnetic survey flight: a Soviet
drift station, fully abandoned. The U.S. employed similar
ice stations to keep tabs on Soviet submarine movement, and
being able to see how the Soviets equipped their own drift
stations, including the tech they employed and any research
they left behind, would be invaluable intelligence. So, why
was it just sitting there, seemingly ripe for the taking?
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 Lightning
is a powerful atmospheric electrical discharge produced by
charge separation inside thunderstorms. When the electric
field becomes strong enough, the insulating properties of
air break down and electricity flows through a narrow
ionized channel, producing the bright flash we see and the
shock wave we hear as thunder. Lightning occurs in many
storms around the world and is one of the most energetic
natural electrical phenomena in Earth's atmosphere.
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 While
protecting a railroad survey party in Montana, Custer and
his 7th Cavalry clash for the first time with the Sioux
Indians, who will defeat them three years later at Little
Big Horn. For two years, Custer and his 7th Cavalry had not
fought a single battle against the Indians of the western
Plains. Hungry for action, Custer was pleased when the 7th
Cavalry was ordered to help protect a party of surveyors
laying out the route for the proposed Northern Pacific
Railroad. More |
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Updated
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 In
the mid-20th century, launching satellites into space helped us
determine the exact circumference of the Earth: 24,873 miles.
But 2000 years earlier, a man in Ancient Greece came up with
nearly the exact same figure using just a couple of sticks and
his brain. More |
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