<p>Preface</p> <p>Dave J. Kelly and Robert k. Poole</p> <p>1. The Wolfe cycle of carbon dioxide reduction to methane revisited and the Ralph Stoner Wolfe legacy at 100 years</p> <p>2. The Pseudomonas aeruginosa whole genome sequence: A 20th anniversary celebration</p> <p>3. Extracellular haem utilization by the opportunistic 3. pathogen Pseudomonas aeruginosa and its role in virulence and pathogenesis</p> <p>4. Evolutionary trade-offs between growth and survival: The delicate balance between reproductive success and longevity in bacteria</p> <p>5. Oxygen levels are key to understanding "Anaerobic" protozoan pathogens with micro-aerophilic lifestyles</p>