The CRC Encyclopedia of Mathematics
- Very huge encyclopedia with nearly all Math terms explained. Bad news: Entries beginning with 10 randomly chosen letters are blocked each day.
Dave's Math Tables - in English and Spanish! Much less detailed than the CRC Encyclopedia, but simpler and less scary stuff to wade though - and no blocking! I would say it's suitable more for schoolkids (up to 18) and those who need to know some maths but not at a very advanced level.
The Great Health Hoax - "Many scientific 'breakthroughs' are nothing but mirages based on flawed research. They result in wasted taxes, false claims for drugs and damaging health scares." This article from the Sunday Telegraph, UK, (right-wing) claims that statisticians skeptical of the validity of Fischer's widely-used 5% p-tests have been ignored. It says nothing about the invalidity of animal research to humans.
Maths FAQ - Suitable for undergrad level, and perhaps beyond.
Mersenne Prime Search - where you too can help to break mathematical records - using just your ordinary, common or garden computer! No mathematical ability required!