With the help of passersby, I built molecular models of some of the chemical substances found in the soil of the Greenwich Peninsula. The ‘ball and stick’ models were made of balls of soil dug from the peninsula, connected by willow withies. The soil was mixed with the seeds of plants which have the ability to clean polluted soil (a process called phytoremediation). The models drew attention to the chemical legacy of the peninsula’s intense industrial activity, and at the same time pointed to a solution.