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!

    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.



  • The Revolution
    by John Adams

    "...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."
  • No Man is Above the Law
    by Theodore Roosevelt

    "..."No man is above the law and no man is below it; nor do we ask any man's permission when we require him to obey it. Obedience to the law is demanded as a right; not asked as a favor."..."


  • Drug Abuse
    about Facts about Drugs

    Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal. 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.

Choose Your Color :


Website preview thumbnail for : What You Need To Know About House Renova
The article is dedicated to the description of construction process and the general rules of home improvement. Read helpful recommendations on property renovation.
Article Content :People say that our house is our fortress. It has a few meanings and can be interpreted in a number of ways. But the fundamental underlying meaning of the phrase is that your flat is the place where you feel safe and calm. The time we spend at home is commonly destined to relaxation and recreation. That's the reason why it is very important that the house should correspond to your inner state and charge you with energy. Regular home repair will help you to create favorable atmosphere in your house. House repair is the procedure of remodeling and making additions to your flat with the aim to make it look better and be more comfortable. Some people regard it as an exciting process since it's a way to bring more comfort to the place they live. For others house renovation is a wearisome process of creating the ideas for renovation, choosing the materials and the fulfillment of the work itself. It depends on how you take the problem and the way you choose to fulfill the renovation. There are 3 fundamental ways to get your flat repaired. First of all, you remodel your flat and fulfill all the work by yourself. It is the cheapest way, but it demands lots of efforts. But the benefit is that you make your own plans real. But taking into consideration that most of us aren't experts in repair work, the result may be far from what you plan. So in case you know for sure what you want the best way will be to invite a repair contractor. It's a specialist in home renovation that will do all the repair work on his own in accordance with your project. For those who are not sure what exactly they prefer there is an opportunity to invite an interior decorator. The decorator will help you in expressing your ideas and will offer you several versions of design in your house. After you prepare a final project you just have to choose a renovation contractor and start with repair work at once. Renovation contractors will help you to build the house of your dream that will bring joy to you for years to come.


  • 3535Listing ID :
  • kafthryn56Owner :
  • Free Articles / LifetimeType :
  • June 25, 2010Date Added :
  • NeverExpires :
  • 0Traffic Out :
  • 0Average User Rating :
  • 0Total User Votes :
  • 0Reviews :


Please rate this link listing.
You must be logged in to be able to rate a listing.


No user reviews have yet been made or approved for this listing.

You must be logged in to be able to leave a comment.