A couple of thousand years ago, the idea that Earth was a sphere floating in space seemed utterly nonsensical. How did modern science evolve into what it is today - and who were some of the people who transformed our understanding of the universe?
RAZOR's Neil Cairns interviews famed Italian physicist and science communicator Professor Carlo Rovelli about the quantum leaps in scientific thought that made everyday technology like smartphones and computers possible.
And we talk about how some of the world's greatest scientists - like Albert Einstein - are defined by their failures as much as their successes.
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