''Sustainability is simply really considering all our actions in terms of the impact on the planet. If we carry on at the rate that we're doing, we need three planets to sustain our current lifestyles. The equivalent of three planets' resources, just to do what we're doing at the moment.''

I chat to Heinz Richardson, award-winning architect, Royal Society of Arts fellow, teacher, mentor and industry commentator. Join us as we talk about rocketing energy prices, sustainable, low-energy homes and the time Heinz cycled across America from west to east coasts.

A graduate of the Bartlett School of Architecture University College London, Heinz is an award-winning architect, teacher, mentor, and industry commentator. He's a former director of Jestico+Whiles Architects, an international practice that has won many awards.

Heinz is a pioneer of employee ownership as a model for business. He has particular expertise in sustainable design, housing and education projects. He believes passionately in the considered use of the Earth's natural resources to create architecture which is enduring and socially responsible. In 2016, he designed and built his own carbon-neutral home in the Chilterns area, House 19, which was long-listed for the RIBA House of the Year award and has been widely published.

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