Why the world needs to do more to protect its oceans

Key Facts

• A UN conference that could result in progress towards a treaty to protect the world’s oceans is starting in Portugal this week.
• They provide around half of the world’s oxygen and absorb more CO2 than the Earth’s atmosphere.
• At the same time they are facing threats from global warming, overfishing and plastic pollution.
• It’s argued that large expanses of the ocean should be protected from human activity to allow them to regenerate.

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