103. Reverse Hearing Loss, Hypersonic Space Cannon, No Moving Parts Heat Engine

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Summary: News: Reversing hearing loss with regenerative therapy | MIT News (01:28) Engineered bacteria could help protect “good” gut microbes from antibiotics | Big Think (07:01) Wireless camera tool could make intubation safer and easier | Futurity  (12:40) A massive ”space cannon” can shoot payloads into space at hypersonic speeds  | Interesting Engineering (16:31)  A new heat engine with no moving parts is as efficient as a steam turbine | MIT News  (22:54)