New series 1/4. In the depths of wartime despair came a medical miracle - penicillin. The age of antibiotics dawned and we embraced everything from cures for hideous infection to penicillin lipstick for hygienic kissing. But a few decades later, as superbugs threaten our hospitals, resistance to antibiotics has ended all that. Chris Bowlby shows how the precious gift was squandered as ambitious doctors, demanding patients and a profit-hungry pharmaceutical industry ignored the warning signs that overuse of antibiotics would allow the bugs to fight back. Producer Smita Patel