The Country of the Blind

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

When does vision loss become blindness? Writer, audio producer and editor Andrew Leland explains how his gradual loss of vision revealed a paradoxical truth about blindness — and shows why it might have implications for how all of us see the world.Learn more about our flagship co ...  Show more

When does vision loss become blindness? Writer, audio producer and editor Andrew Leland explains how his gradual loss of vision revealed a paradoxical truth about blindness -- and shows why it might have implications for how all of us see the world.Learn more about our flagship c ...  Show more

And at last I see the light. In episode 64 of Overthink, Ellie and David discuss vision in the second installment of their ongoing series on the five senses. They discuss the prevalence of visual metaphors for knowledge, and why sight has historically been the most privileged ...

If you had to name the innovations that have transformed human civilisation, you might suggest the printing press or the Internet, but the humble pair of spectacles has also revolutionised the way many of us experience the world. It's said that an astonishing three quarters of th ...  Show more