UN member states are meeting in New York to try and agree on a global treaty for the high seas. They want to protect fragile ecosystems in international waters. What's prevented a deal until now?

Join host Laura Kyle.

Guests:

Jessica Battle - Senior Expert on Global Ocean Policy at the World Wildlife Fund.

Daanish Mustafa - Professor of Critical Geography at King's College London.

Will McCallum - Head of Oceans at Greenpeace UK.