Twenty-first Century Threats: Malaria In 1955, the World Health Organization announced an ambitious plan...
Twenty-first Century Threats: Tuberculosis This lecture is a part of the series Twenty-First Century...
Mathematics, Motion, and Truth: The Earth goes round the Sun The reality of the Earth's motion, as proclaimed by Copernicus...
Your questions answered... and your answers questioned! Professor Frank Close attempts to answer your questions on everything...