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Can we lower the environmental impact of a bottle of gin? And do customers need to rethink their expectations of what fancy drinks bottles should look and feel like? Diageo makes some of the world's best known drinks brands, including Guinness, Gordons and Smirnoff. Deborah and Fliss talk bottles, energy and growth with the company's Global Head of Sustainability.

Would you recycle more if you got money back for doing it? This summer Scotland's bottle deposit return scheme goes live, Deborah and Fliss hear how it's expected to double recycling rates.

And, listeners wanted to know, what's greener, plastic or glass? So one of Deborah and Fliss' favourite experts, Professor Rachael Rothman returns to unpick the answer. (Because as always, it's not simple!)

If you've got a question, you can email the show at GreenMoney@bbc.co.uk or talk to Deborah and Fliss on Twitter: #GreenMoneyShow.

With Deborah Meaden and Felicity Hannah.

Producers: Lexy O'Connor and Kath Paddison
Studio Mananger: Hal Haines
Executive Producer Natasha Johansson
Series Producer: Justin Bones