SCIENCEWEEK October 10, 2003 Vol. 7 Number 41A Contents: 1. History of Atmospheric Physics: On Clouds 2. Geophysics: Magnetic Field at the Surface of Earth's Core 3. Chemical Physics: Electrical Resistance of Single Molecules 4. Immunology: On T Cells 5. Paleoanthropology: The Ancestry of Early Americans 6. Science Policy: Medical Specialties and Medical Incomes =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=