A new look at the louse family tree has revealed that many lice hosted by mammals, including the human head louse, have coevolved with mammals over tens of millions of years. Continue reading Itching for a change? Some lice have evolved alongside their hosts for millions of years.
by Mahaa Ahmed Dr. Hildrus Poindexter, a specialist in tropical diseases, epidemiology, and public health, was the first African American to receive both an MD and PhD. He earned his MD from Harvard Medical School in 1929 and his PhD in immunology and microbiology from Columbia University in 1932. Eager to begin his career, Dr. Poindexter applied for a job at a U.S. laboratory in … Continue reading Dr. Hildrus Poindexter — Making a difference through science and inspiration