Bonnie Bassler is the world specialist in how bacteria communicate within the human body. In a special edition of Exchanges At The Frontier she takes questions from children all over the world, and explains to A.C. Grayling and pupils at Haverstock School in London that her breakthrough in understanding how bacteria communicate holds the key to solving the problem of failing antibiotics.

(Picture: Bonnie Bassler. Credit: Wellcome Library, London) Show less