As doctors warn it can cause a dangerous reaction with a host of common drugs... 1  Researchers warn that grapefruit reacts with many medicines. 2  The fruit can cause devastating side-effects from stomach bleeding to kidney problems. 3  Doctors say the public is ignorant to the dangers and putting themselves needlessly at risk.
According to the definition of the question (based on light reflection and not light emission), a well-polished mirror is the the whitest substance on earth. The main reflection layer is usually made out of silver.
Photographs snapped on Friday morning showed the waters on the beach were polluted with algae. The shores of Hyams Beach are so well-known that the Guinness Book of Records named it as having 'the whitest sand in the world' in 2006. One local told Daily Mail Australia the waters at the beach were usually beautifully clear. 'At the moment, it's a bit green,' Ellen Hay said.