Introduction to Randomness explains what true random numbers are and why they're interesting
History explains how started and where it is today
Many Testimonials from folks who have found very creative uses for random numbers
Acknowledgements to all the generous folks who have helped out
Quotations about randomness in science, the arts and in life generally
Media Coverage and Scientific Citations lists popular print and scientific mention of the service
News about the latest additions to the site
We don’t completely understand yet why people get varicose veins. They are probably caused by a number of different factors which may act together. These include a raised pressure within your veins, and your vein walls being unusually thin and weak. This causes the valves in your veins to expand and separate, which means they can’t work properly. Blood can’t travel up your veins as well or as easily as it should, and instead flows into the relatively low pressure superficial veins. This makes those superficial veins enlarge into varicose veins.