Last year she was on top of the world, but now Elizabeth Holmes has a net worth of zero. Holmes, who is the founder of blood-testing company Theranos, was at the top of Forbes' list of the richest self-made women in America with a net worth of $4.5billion last year. However, Forbes has lowered their estimate of her net worth to nothing, amid allegations that the blood-testing company she founded in 2003 has inaccurate tests and is being investigated by federal agencies. Theranos Inc was sued on Thursday, accused of endangering customer health through 'massive failures' that misrepresented the accuracy...