Severo Ochoa

Among the great names that adorn the roll of Nobel prize-winners in Medicine is that of Otto Meyerhof, my admired teacher and friend, to whose inspiration, guidance and encouragement I owe so very much.

What do cells do when they see a broken piece of DNA? Cells don't like such breaks. They'll do pretty much anything they can to fix things up. If a chromosome is broken, the cells will repair the break using an intact chromosome.

Did you know that nearly one in three children live apart from their biological dads? Those kids are two to three times more likely to grow up in poverty, to suffer in school, and to have health and behavioral problems.