It’s not laws or politics, but culture that most prevents the federal government from tackling issues of sustainability. That’s one finding in a new report from the National Research Council. A committee of academics, industry experts and former government officials looked at how agencies are addressing long-term challenges like the need for energy, clean water and healthy ecosystems. It found a lot of room for improvement. Committee Chairman Thomas Graedel, a professor of industrial ecology at Yale University, joined Tom and Emily to discuss the report’s findings.