Looking back at… Twenty Questions

Our Twenty Questions series asks sustainability leaders and entrepreneurs, from renewable energy to responsible investment, about life, sustainability and everything.

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1. Lucy Siegle – A columnist with the Guardian and Observer and reporter on programmes like The One Show and Radio 4’s From Our Own Correspondent, Siegle is the brains behind the acclaimed Observer Ethical Awards. Read more.

2. Sam Bowman – Sam Bowman is research director at libertarian think tank Adam Smith Institute. Read more.

3. Leo Johnson – Johnson is a sustainability expert and a partner at global consulting firm PwC, following the acquisition of the company he set up, Sustainable Finance. Read more.

4. Jeremy Leggett – Leggett is a social entrepreneur and author. He chairs renewable energy firm Solarcentury and the Carbon Tracker thinktank. In a former life, he was a geologist and a consultant to the oil industry. Read more.

5. Summer Rayne Oakes – A designer, activist, author, eco-model and social entrepreneur, she is currently working on the intersection of technology and local food, and before that, launched Source4Style, the online tradeshow for sustainable design. Read more.

6. Joel Solomon – Chairman of Renewal Funds, Canada’s largest social venture capital firm, Solomon is a compelling speaker on ethical and responsible investment. Read more.

7. Sarah Butler-Sloss – An internationally recognised leader in the field of renewable energy for the past two decades, she is best known as the founder of the Ashden Awards. Read more.

8. Bruce Davis – Davis is founder of Abundance Generation, a democratic funding platform that allows the general public to invest as little as £5 in renewable energy projects. Read more.

9. Rob Hopkins – He is the man behind the Transition Towns movement, which was launched in Totnes, Devon, in 2005, in response to environmental and economic pressures. Read more.

10. Raj Singh – A freelance writer on sustainable investment and CSR, blogging at www.esginsider.com, Singh was previously programme director at the UK Sustainable Investment and Finance Association (UKSIF), and a senior ESG analyst at ECPI. Read more.

Photo: .Amanda.Jo. via Flickr