SciDev.Net: Rising temperatures, which promote algal blooms and the spread of pathogens, are setting a new agenda for microbiologists, says Bernard Dixon. In reporting and debating climate change impacts and solutions, the popular media tends to focus on researchin climatology, ecology, meteorology, and computer modelling. But given that microorganisms play diverse roles in driving some of the largest-scale phenomena on the planet — from photosynthesis and nitrogen cycling to pandemics of …