The Indians of Central and South America were the first to utilize rubber's unique properties. Christopher Columbus watched them play a game called "Tlachtlic," a vigorous cross between basketball and football, with the object of directing a rubber ball through a stone ring.

Christopher Columbus discovered natural rubber in Haiti where he saw the natives there playing with ball made from the exudation of a tree called "cau-uchu". John Priestly found that natural rubber could erase or rub away pencil mark, hence he called the material "rubber". Thomas Hancock invented a machine called "masticater" that allows the rubber to be softened, mixed and shaped. H. Wickham collected the seeds and secretly carried over to London from Brazil. See similar questions...

The FRF has from the very beginning been heavily involved in measuring oceanic events, whether it be waves, wind, currents, tides, ect. But experiments using outside resources have always been encouraged. Duck-X in 1978 tested the accuracy of a satellite radar images using data already collected from the pier. A Shoreface Experiment (ASEX) was the first experiment to study how sediments moved along the bottom due to wave action and currents. Duck82 studied sandbar movement during large storms. See similar questions...

Forecasters at McMurdo Station in Antarctica discovered B-15 and B-16 by looking at satellite imagery. See similar questions...

Rubber bands or elastics contribute a lot to straighter teeth. They are marvels of physics. Attached to your braces, elastics exert the energy force that creates the right amount of pressure to move teeth. It's important to wear your elastics all the time and change them every day so the force is constant which the teeth like. As for bouncing an elastic off someone across the room, it will happen (don't worry, your aim will improve). See similar questions...

We really can't help you there. Sorry. But any local office supply store may make one for you. There are also many online custom stamp makers on the Internet. See similar questions...

ITS noticed unusual traffic on the network in recent weeks and began manual scans of all central servers. The hacking software was discovered as a result of this investigation. No other central servers have been found to be compromised. See similar questions...

Doctors and scientists recognized a type of hepatitis in the early 1970's that they called Non-A, non-B hepatitis. In 1987, they discovered that it was a unique virus and named it Hepatitis C. See similar questions...

A lot! For some of the highlights, look at NRAO's press releases about recent research results. Every year, hundreds of scientists use NRAO's radio telescopes, and they report their results in numerous papers in scientific journals. Almost any introductory astronomy textbook will contain images and tell of research results from NRAO's various radio telescopes. See similar questions...

In the late 80's, psychologist Francine Shapiro, Ph.D., observed that particular eye movements reduced the intensity of disturbing thoughts in some clients. Dr. Shapiro decided to study this effect scientifically. In 1989, she reported in the Journal of Traumatic Stress, her success using a method she called EMDR to treat victims of trauma. Since that time, other therapists around the world have contributed to its development. See similar questions...

I was able to receive my 1st chemo treatment with the new drug this passed Friday. The actual procedure went well, I didn't have any problems and felt fine. That evening and since then I have had body aches similar to flu aches. That is normal for this drug. I have been taking Tylenol and it does help. Good to see a post from you. Have been wondering how you're doing. Glad the new chemo is agreeing with you. See similar questions...

MAP is the result of 23 years of research by an internationally renowned nutritional research center. See similar questions...

Can my parter become infected with the virus from giving oral sex?I was just recently dianogsed with Genital Warts. he preformed the oral sex a week before. Can genital warts be popped, because i have small bumps on my scrotum and shaft that when pressed discharge and firm string of white like popping a pimple, also I have small white dots on my lips that have no texture unless i try to pop them, could this be a sign of warts. What are some symptoms of mild HPV. See similar questions...

Your physician will talk with you about your medical history and your urinary habits, then you will have a physical examination and urination and other tests. These investigations will help find the exact cause of your urinary incontinence and the best treatment for you. How does US Women, Inc. treat urinary incontinence? A: After the causes of your urinary incontinence are known, treatment can start. Urinary incontinence is treated in one or more of three ways: See similar questions...

Rubber is the sap of trees found mostly in tropical climates. The sap is altered by mixtures of carbon (why it's black) and mineral oils and various fillers. Polyurethane is completely chemical or man-made. Because rubber is a biodegradable product it is affected by ozone and will over time dry rot and degrade, while urethane will keep going and going. Urethane bushings will increase the performance handling characteristics of your vehicle. Urethane is a firmer material then rubber. See similar questions...

EPDM is a synthetic rubber polymer made from ethylene and propylene monomers. It was developed in the early 1960's and is used in radiator and steam hoses, freezer gaskets, tires, roofing membranes and aircraft seals to name only a few applications where EPDM is superior to other materials. See similar questions...

Liquid Rubber? is a liquid version of EPDM rubber marketed for commercial/industrial applications. It cures by chemical reaction at ambient (ordinary) temperatures to form a flexible rubber membrane. A pre-measured catalyst is added to the rubber compound before application. The liquid form makes it possible to apply EPDM rubber to many materials regardless of their shape. Liquid Rubber has a 2-year warranty unless applied by a certified applicator. See similar questions...