Full Spectrum

The surprising power of a simple phone number to connect a community. What infrastructure mystery keeps you up at night? Submit your Service Request by recording a voice memo with your question and emailing it to servicerequest@99pi.org. Service Request is a production of 99% Inv ...  Show more

How one wealthy, amateur astronomer convinced the world Martians were real. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simp ...  Show more

From kelly green to millennial pink, our world is graced with a richness of colors. But our human-made colors haven’t always matched nature’s kaleidoscopic array. To reach those brightest heights required millennia of remarkable innovation and a fascinating exchange of ideas betw ...  Show more

The world is full of colour! But, wonders listener Maya Crocombe, ‘how do we see colour and why are some people colour blind?’Dr Rutherford and Professor Fry set out to understand how special light-sensitive cells in our eyes start the process of colour perception, why people som ...  Show more

The world is full of colour! But, listener Maya Crocombe wonders ‘how do we see colour and why are some people colour blind?’Dr Rutherford and professor Fry set out to understand how special light-sensitive cells in our eyes start the process of colour perception, why people some ...  Show more

The philosopher and cultural theorist Kwame Anthony Appiah argues for a world free of racial fixations.

He tells the story of Anton Wilhelm Amo Afer. He was five years old when he was brought from the Gold Coast to Germany in 1707, educated at a royal court and became a ...