Benjamin Von Wong, a Canadian artist and activist, is heaping piles of plastic waste onto a large sculpture in front of the U.N. office. Delegates to the treaty talks pass by the sculpture daily in a reminder of their responsibility to solve the plastic pollution crisis.

Multiple meetings are continuing at the second part of the fifth session of the Intergovernmental Negotiating Committee, which aims to develop an international legally binding instrument on plastic pollution, including in the marine environment. The session will run until 14 August.