Why are only some batteries rechargeable?

The chemistry of batteries you can replenish, and do our feet change shape as we age?
04 October 2021
Presented by Chris Smith with Lester Kiewit, 567 CapeTalk. 
Production by Chris Smith.


Battery full indicator


This week, where Vitamin D comes from, if lab-grown protein is vegan-friendly, how mammals evolved to dive deep underwater, how genes can be used to track evolution, how chillies create a burning sensation in the mouth, whether feet change shape as we age, what makes a battery rechargeable, and why tropical seas tend to be blue and clear. Dr Chris Smith and Lester Kiewit have the answers...


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