DUPRENE
November 2, 1931 - Wilmington, Delaware, U.S.A.
The DuPont company, of Wilmington, Delaware, announced the first synthetic rubber. It was known as DuPrene, and from 1936 as Neoprene. Many scientists were trying to make natural rubber in the 1920s and 30s. One of the Wallace Carothers team, Gerard Berchet, had left a sample of monovinylacetylene in a jar with hydrochloric acid (HCl) for about five weeks. Then on 17 Apr 1930, coworker Arnold M. Collins happened to look in that jar and found a rubbery white material. The HCl had reacted with the vinylacetylene, making chloroprene, which then polymerized to become polychloroprene. The new rubber was expensive, but resisted oil and gasoline, which natural rubber didn't. It was the first good synthetic rubber.
COMPUTER "WORM"
November 2, 1988 - Cornell University, U.S.A.
A computer "worm" unleashed by a Cornell University graduate student, Robert T. Morris, began replicating wildly, clogging thousands of computers around the country. Intended as an experimental, self-replicating, self-propagating program, Morris soon discovered that the program was infecting machines at a much faster rate than he had anticipated. Computers were affected at many universities, military sites, and medical research facilities. When Morris realized what was happening he sent an anonymous message, instructing programmers how to kill the worm and prevent reinfection. However, because the network route was clogged, this message did not get through until it was too late. Morris, was later tried, fined and given probation.
MEMBER LOGIN
RANDOM QUOTES
Until a man duplicates a blade of grass
by Earth Day, Thomas Alva Edison Inventor
"...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
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."..."
RANDOM FACTS
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.
Salary
about Steve Jobs
Steve Jobs' annual salary was $1, just enough to keep company health benefits.
Alternative Health :
Choose Your Color :
Category Information : Alternative Health
This is our Alternative Health category. If you are interested in Alternative Health, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Offering more than Just Eggs! The World Egg Bank offers you more than just eggs – we pride ourselves on our relationships with our Recipients, Donors, and each Clinic with which we work. Our...
Our company is an MMS water purification drops supplier based in US, MMS water purification drops is a combination of naclo2 which is very effective in treating some severe diseases such as malaria...
Is a woman-owned holistic and ecological minded retail and wholesale company located in Idaho. The company is dedicated to bring to you authentic natural, organic skin care products of finest quali...
We’ve managed to create an exclusive sanctuary for recovering drug addicts and alcoholics by limiting our enrollment and by offering a myriad of cutting edge treatments. Our state of the art...
Bach Flower Essences; help to concentrate better and get less distracted, become calmer and be less impulsive, change hyperactivity into normal activity levels, reduce being frustrated, function be...
Has been developing and delivering cutting edge substance misuse presentations and education for the past 20 years. We have worked with the uniformed services, sporting organizations, schools and c...
Quantum Formulations is a leading suppliers of pharmaceutical drugs in India, the pharmaceutical durgs offered by us are pharmaceutical tablets, cough & cold syrup, anti diabetic medicines, antibio...
Alcohol Treatment Center: Don't be helpless, we at FreshStartPrivate, an alcohol withdrawal & recovery, alcohol rehabilitation, detox treatment company will cure alcoholics with best Scient...
Receive everlasting solution for laser hair removal, laser lipo, botox, sun damage, photo facial, at very affordable price in Dallas by rejuve med spa.
Search Office Space was founded in 1993 by Richard Smith in order to bring together all elements of the serviced office space market into one convenient single point of contact, with clients having...
Associated transformers is a leading Transformer Manufacturing Company in Tamilnadu, India. Lead the industry in manufacturing of various types of transformers like Distribution, Furnace/ Rectifier...
Carvers for Conservation was started to introduce the people conserving the habitat of migratory birds to the premier bird sculptors in the world. My intention was to be mutually beneficial to the ...
Search engine is the term with which we are accustomed with very much. But the web directory is not that same. The web directories are older than search engines according to the time of their invention.
Unfortunately just like humans our pets will age too. With the aging process comes health problems and with health problems comes very expensive vet bills. Research you dog