Sir Isaac Newton was an English physicist, mathematician, astronomer, alchemist, inventor and natural philosopher who is generally regarded as one of the most influential scientists in history.

Clare recently returned from two years in Vietnam, working as the BBC Hanoi Correspondent. After a career as a political reporter in Australia, she joined the BBC World Service in 1996. Specialising ...

"I have worked in Spain, China and the UK, where I have gained most of my experience teaching people from all over the world, of all ages and all language levels. I currently teach at the London ...