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.
Hydrogen is, in fact, the lightest gas ever found. Hydrogen has no color, no smell and no taste. The hydrogen atom is so simple and small, it is hard to believe that hydrogen is the most important and abundant substance in the universe. Hydrogen atoms are the building blocks of other atoms.ydrogen has no color, no smell and no taste. The hydrogen atom is so simple and small, it is hard to believe that hydrogen is the most important and abundant substance in the universe. Hydrogen atoms are the building blocks of other atoms.