To celebrate 10 years as a CLF sponsor, Thornton Tomasetti convened a group of the organization’s leaders and members to discuss the past, present and future of understanding, measuring and reducing embodied carbon in buildings and infrastructure.
KATE: The CLF began with a small group of people who were excited about understanding the carbon footprint of building materials. Usually that was one or two people in a single firm that were trying to advance this work. By 2020, it was still a relatively small group looking at embodied carbon. That year we changed tactics, empowering more people to act by founding regional hubs. We also moved into engaging more explicitly with policy.
CHRIS: I’ve been involved in this with Kate since day one, and it was a lonely, small group, so that outreach has been important. The wider sustainability community began to recognize that embodied carbon was critical, especially around what we call the "time value" of carbon. That’s the idea that saving X amount of carbon emissions now is much more crucial than saving the same amount 40 years from now, when it's too little, too late. That’s been a fundamental driver. And the CLF instigated a lot of the communication about that.
AMY: I got involved with the CLF when Thornton Tomasetti joined in 2012, and the window of opportunity has been opening since then. Attention to climate change has increased as we’ve experienced more impacts. At the same time, there was an expanding community – of academics, government and people in the building sector – that was enabled by the CLF and the discussions it was holding. Industry groups started paying attention and certification programs began providing points for measuring and offsetting embodied carbon. And then tools were developed that enabled designers to take action.
AMANDA: Those tools enabled measuring. And measuring embodied carbon led to technological advancements when people realized that some materials have egregious impacts. We’re seeing so much innovation, spurred by a demand for improvement. We work a lot with concrete procurement, and there are so many interesting new materials. Embodied carbon is frequently synergistic with issues like material toxicity; something lower in embodied carbon is often also healthier. |