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TODAY IN HISTORY
DNA STRUCTURE DISCOVERED
February 28, 1953 - Cambridge, MA, U.S.A.
February 28, 1953 - Cambridge, MA, U.S.A.
James Watson, from early on this Saturday, spent his time at the Cavendish Laboratory in Cambridge, shuffling cardboard cutout models of the molecules of the DNA bases: adenine (A), guanine (G), cytosine (C) and thymine(T). After a while, in a spark of ingenuity, he discovered their complementary pairing. He realized that A joined with T had a close resemblance to C joined with G, and that each pair could hold together with hydrogen bonds. Such pairs could also neatly fit like rungs meeting at right-angles between two anti-parallel helical sugar-phosphate backbones of DNA wound around a common axis. Such structure was consistent with the known X-ray diffraction pattern evidence. Each separated helix with its half of the pairs could form a template for reproducing the molecule. The secret of life!
BALTIMORE & OHIO RAILROAD
February 28, 1827 - Baltimore & Ohio USA
February 28, 1827 - Baltimore & Ohio USA
The Baltimore & Ohio Railroad became the first U.S. railway chartered for the commercial transportation of freight and passengers. Investors hoped that a railroad would allow Baltimore, the second largest U.S. city at that time, to successfully compete with New York for western trade. New Yorkers were profiting from easy access to the Midwest via the Erie Canal.
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RANDOM QUOTES
-
Rules for Happiness
by Immanuel Kant
"...Rules for Happiness: Something to do, Someone to love, Something to hope for...."
by Thomas Jefferson
"...Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and freedom in all just pursuits...."
RANDOM FACTS
-
Harvard Medical School
about Eyesight Myth and Fact
Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.
about Stolen On New Year's
More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)
A Little Mixed Up :
ARTICLE INFORMATION :
Just a line to say I'm living, That I'm not among the dead
Though I'm getting more forgetful And more mixed up in the head.
Though I'm getting more forgetful And more mixed up in the head.
ARTICLE CONTENT :
Just a line to say I'm living, That I'm not among the dead
Though I'm getting more forgetful And more mixed up in the head.
For sometimes I can't remember When I stand at foot of stair, If I must go up for something, Or if I've just come down from there, And before the frig so often My poor mind is filled with doubt Have I just put food away, or Have I come to take some out.
And they're times when it is dark out, With my night cap on my head, I don't know if I'm retiring, Or just getting out of bed So, if it's my turn to write you There's no need of getting sore I may think that I have written, And don't want to be a bore.
So, remember I do love you, And I wish that you were here;
But now it's nearly mail time So I must say "Good-bye, dear."
***************************
There I stood beside the mail box With a face so very red,
Instead of mailing you a letter, I had opened it instead !
Though I'm getting more forgetful And more mixed up in the head.
For sometimes I can't remember When I stand at foot of stair, If I must go up for something, Or if I've just come down from there, And before the frig so often My poor mind is filled with doubt Have I just put food away, or Have I come to take some out.
And they're times when it is dark out, With my night cap on my head, I don't know if I'm retiring, Or just getting out of bed So, if it's my turn to write you There's no need of getting sore I may think that I have written, And don't want to be a bore.
So, remember I do love you, And I wish that you were here;
But now it's nearly mail time So I must say "Good-bye, dear."
***************************
There I stood beside the mail box With a face so very red,
Instead of mailing you a letter, I had opened it instead !
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- December 25, 2013Date Added :
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