Prince Charles gives speech at meeting of the Prince's International Sustainability Unit

The speaker opens with acknowledgments and introduces the topic of plastics, expressing a long-standing passion for addressing this environmental issue. The ISU has been working to bring together experts to tackle the problem comprehensively. Collaboration with Mackenzie from ITC is highlighted, and the hope is expressed that the meeting will serve as a platform for continued efforts over the next year.

Who is mentioned as collaborating with the ISU on this issue?

What does the speaker hope will happen as a result of the afternoon's meeting?