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With huge heads on top of spindly stalks, how do sunflowers defy gravity to stay standing? That was a question sent to CrowdScience by listener Frank, whose curiosity was piqued by the towering sunflowers on his neighbour鈥檚 deck. They stay up not only when the weather is fine, but, even more impressively, during strong winds. Could this feat of strength, flexibility and balance inspire the construction of tall buildings?

It's a question that takes presenter Anand Jagatia to a sunflower festival in England, to see how the sunflower鈥檚 long evolutionary lineage has honed its structure. And from tall flowers to tall buildings, we turn to structural engineers, asking how these concepts factor into the design of the world鈥檚 tallest skyscrapers. Can ideas drawn from sunflowers or other natural structures help buildings withstand wind, or even storm surges?

Contributors:
Stuart Beare, partner and grower at Tulley鈥檚 Farm
Roland Ennos, Visiting Professor in Biological Studies, University of Hull
Sigrid Adriaenssen, Professor of Civil and Environmental Engineering, Princeton University
Koichi Takada, founder of Koichi Takada Architects

Presenter: Anand Jagatia
Producer: Tom Bonnett
Editor: Cathy Edwards
Production Co-ordinator: Ishmael Soriano
Studio Manager: Bob Nettles

(Image: Tall Sunflower blooming in a field, Melbourne, Victoria, Australia Credit: Naomi Rahim via Getty Images)