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ZERO Number systems had no number for nothing until Indian mathematicians invented it around 650 CE.
INFINITY is the word used by mathematicians to define an endless amount. The symbol for infinity is an eight on its side: ∞
Although equations existed in ancient times, the equals sign was only invented in 1557, by Welsh mathematician Robert Recorde.
Yellow came from the urine of cows fed on mango leaves in Bengal, southern Asia.
LAPINE The rabbits in Richard Adams' novel Watership Down speak English mixed with a rabbit language, called Lapine.
It is thought that more than 200 of today's languages are spoken by fewer than 10 people.