Failures in the way recycling is set up in the UK is contributing to pollution in our seas
Scientist and broadcaster Prof Trevor Cox explores a new wave of biomimicry.
Miriam O'Reilly investigates whether a crash in prices has made recycling a waste of time.
Erica McAlister explores how insect technology can solve human design problems.
Transforming waste into valuable products, with Bridget Kendall and guests.
The idea recycling is a moral obligation, as well as an economic one, is relatively new.
South America correspondent Wyre Davies visits the Recycled Orchestra of Paraguay.