SCIENCEWEEK October 3, 2003 Vol. 7 Number 40A Contents: 1. Evolution: Hybrids and Speciation 2. Medical Biology: Genomics as Disease Probes: Two Examples 3. Medical Ethics: Genomics and Physician Obligations 4. Physics: On Turbulence 5. Chemical Physics: On Plutonium 6. Atmospheric Physics: Auroras =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=