By then, I was making the slow transition from classical biochemistry to molecular biology and becoming increasingly preoccupied with how genes act and how proteins are made.

Moreover, the concern of some that moving DNA among species would breach customary breeding barriers and have profound effects on natural evolutionary processes has substantially disappeared as the science revealed that such exchanges occur in nature.

Looking back, I realize that nurturing curiosity and the instinct to seek solutions are perhaps the most important contributions education can make.

Fears of creating new kinds of plagues or of altering human evolution or of irreversibly altering the environment were only some of the concerns that were rampant.

With time, many of the facts I learned were forgotten but I never lost the excitement of discovery.

Today, it is research with human embryonic stem cells and attempts to prepare cloned stem cells for research and medical therapies that are being disavowed as being ethically unacceptable.

Novel technologies and ideas that impinge on human biology and their perceived impact on human values have renewed strains in the relationship between science and society.