How Alexander Fleming Accidentally Discovered Penicillin

1) Why was Penicillin an accidental discovery ?

2) Name some of the diseases Penicillin can cure ?

3) Why did the British and American armies decide to mass produce penicillin from 1941 to 1945?

4) What was Flemming awarded?

5) Why is Flemming seen as a hero ?

6) What is the only problem with antibiotics ?