This week begins on something of a bright note for environmentalists. After more than a decade of talks, countries around the world have reached a deal on the preservation of the oceans. The agreement enshrines the idea that the so-called high seas belong to all of humanity and it includes plans to set up marine protected areas. But how will the deal be implemented in this huge area that represents more than 60 percent of the world's oceans? FRANCE 24's Science Editor Shirli Sitbon tells us more.

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