Max Pearson presents a collection of the week's Witness History interviews from the BBC World Service. This week, we hear from a perfumer who in 1990 helped create the world’s first perfume archive in Versailles France. Our guest is Dr William Tullett, a Senior Lecturer in History at the University of York and author of Sniff, History of Smells.

Then, we hear how in 1991 African journalists created the Windhoek declaration - a set of free press principles. It led to World Press Freedom Day marked annually on 3 May.

Next, the global oil crisis of 1973. A former Dutch politician tells us how the Netherlands became the first country in Europe to introduce car-free Sundays.

Plus, the philosopher on how his 1972 essay on the Drowning Child thought experiment inspired the Effective Altruism movement.

And President Obama’s speech writer on how secret negotiations in 2014 improved relations between the US and Cuba.

Finally, a Sporting Witness on the Juventus match-fixing scandal in 2006.

Contributors:

Jean Claude Ellena - perfumer

Dr Will Tullett - Senior Lecturer in History at the University of York and author of Sniff, History of Smells

Wim Meijer - State Secretary for Culture, Recreation and Social Work in the Den Uyl Labour Government

Peter Singer - philosopher

Ben Rhodes - Barack Obama’s speech writer

Paddy Agnew - journalist

(Photo: Perfume bottles. Credit: Walter Zerla via Getty Images)