Blue and Green: US secretary of state John Kerry has called for international cooperation to protect oceans that are under siege from overfishing, pollution and acidification.
On Monday, the State Department will host a two-day summit bringing together policymakers, scientists, businesses and activists to discuss the many threats currently facing marine life.
It is hoped the event will mobilise global action to reduce the pressure on fish stocks, to cut the contamination of the seas with manmade pollutants,...