Peter Goodwin hears from experts at the School speaking at the annual science festival of the British Association for the Advancement of Science held in Liverpool, September 6-10, 2008, and from recent scientific publications on: the health impact of global warming, a tropical virus reaching temperate zones, inequalities in cancer outcomes, how eating oily fish can save your eyesight, and free internet publishing scientific journals. Interviews: Astrid Fletcher : Eating Oily Fish Protects Your Eyesight Jo Lines : Chikungunya Virus Danger Beyond The Tropics Sari Kovats : Global Warming's Heatwave Health Hazard Colin Sutherland : Open Access Publishing: Fair Play For Scientists Michel Coleman : Cancer Survival: Big International Differences