Babbage: Unstrung — the end of string theory?

The 20th Century was a golden age for physics but some of its ideas for explaining the material universe have been thrown into doubt. Could a theory known as entropic gravity usher in a new dawn? Also, how should scientists engage with science deniers? And, the technology behind the next generation of prosthetic limbs. Natasha Loder hosts. 

For full access to The Economist’s print, digital and audio editions subscribe at and sign up for our new weekly science newsletter at

See for privacy and opt-out information.