There's an interesting item on Channel 4 News:

http://www.channel4.com/news/articles/science_technology/experts+unravel+arsenic+mystery/2005747

If they're not careful, they'll go on to invent homeopathy (homoeopathy) next!

This 'paradox' about Arsenic is nothing of the sort - we have known for 200 years (since Hahnemann) that what a substance can cause, it can cure. Arsenic is well-known as a homeopathic medicine with a strong beneficial action on certain cancer patients. In homeopathic preparations, it is rendered safe. When will the 'conventional' and 'scientific' world realise this?