 Going
as far back as ancient times, governments have been
encrypting confidential messages. Julius Caesar was famous
for encoding military communications using a simple
substitution cipher. The Second World War forced combatants
across the globe to coordinate far-flung militaries by radio
and telegraphy, every transmission susceptible to
interception. The Soviets, obsessive about secrecy, chose a
mode invented in the 1880s called the ''one-time pad.'' The
principle was elegant and, in theory, impenetrable. More |
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 Can
tattoos protect your skin from the sun's harmful rays, or do
they make things worse? A new study suggests there may be
cause for concern, finding that people with tattoos had a
29% higher risk of developing melanoma, a serious form of
skin cancer often linked to ultraviolet (UV) exposure.
However, tattoos did not appear to increase the risk of
squamous cell carcinoma, another type of skin cancer related
to UV damage.
More |
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 Have
you ever noticed how certain numbers seem to pop up over and
over again in the Bible? One such number is 40. In the
Bible, the number 40 holds significant spiritual meaning and
is often used to symbolize a period of testing, trial, or
preparation. Lets take a closer look at the biblical
meaning of the number 40 and how it is used throughout the
scriptures. More |
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  Beef
was a luxury their ancestors in Ireland were likely unable to
afford Irish farmers exported beef to England but ate
pork, which was cheaper, at home. No, corned beef does not
contain corn. The ''corns'' that give the dish its name are
large grains of rock salt, which were used to cure the product
so it would last longer. More than 35 million Americans claim
Irish heritage, nearly 12 percent of the U.S. population.
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