My life in science has been rich and rewarding. I have sacrificed very little.

During the summer months of my high-school years, I befriended Dr. Robert Kough, a physician who cared for members of my family. Although he was practicing general medicine in a rural community when I met him, he was well equipped to arouse in me an interest not only in the life of a physician but in the fundaments of human biology.

My youth held little forecast of a career in biomedical research. I was born on February 22, 1936, in York, Pennsylvania, and spent my childhood in a rural area on the west bank of the Susquehanna River.

Tests conducted before I graduated predicted a future for me in journalism, forestry, or the teaching of music; persons who know me well could recognize some truth in those seemingly errant prognoses.

We need investment in green economy infrastructure; public services, training and education; and a multilateral plan to create youth job opportunities.

It's so daunting to walk into a classroom or a school auditorium. It's like the world's weirdest blind date. I know all the students are thinking, 'Who is this tool standing up in front of us?'

Adults tell students that it gets better, that the world changes after school, that being 'different' will pay off sometime after graduation. But no one explains to them why.

Hillary Clinton is excoriating Donald Trump over Trump University? The Clinton scandal at Laureate Education, a for-profit education chain of schools and colleges operating world-wide, including the United States, is much worse.