Columbia University faculty in all BBC programmes
Vice-President Al Gore's oversees the Boeing 777 jetliners deal with China.
A profile of George Gallup, the inventor of the Gallup poll.
The achievements of George Gallup, inventor of the Gallup poll of public opinion.
Mayor of New York City, David Dinkins, asks the public for advice on social problems.
Alistair Cooke remembers George Gallup, the creator of the scientific polling method.
The revelations of the televised debate between Al Gore and Ross Perot.
Alistair Cooke reflects on the opinion poll discoveries of George H Gallup.