Viewpoint: Is there still a place for hand sketching in the digital design age?

This month's letters discuss carbon sequestration, climate change and population matters, and consider lessons that can be learned from both failures and past experiences.

Arup global sustainable development leader, Jo da Silva, was made a Dame in the recent New Year Honours. She talks to Jackie Whitelaw about social responsibility in business, the engineering response to COP26 and the impact of the pandemic on future planning of cities.

John Callanan shares his experience as a specialist structural steelwork fabricator to make the case for greater material efficiency as we respond to the climate emergency.