Biology Andrew F. Read – Ballooning Parrots and Semi-Lunar Germs Helena Cronin – The Battle of the Sexes Revisited John Krebs – Richard Dawkins: Intellectual Plumber—and More Michael Hansell – What is a Puma? Biologie Andrew F. Read – Ballooning Parrots and Semi-Lunar Germs Helena Cronin – The Battle of the Sexes Revisited John Krebs – Richard Dawkins: Intellectual Plumber—and More Michael Hansell – What is a Puma?