When completed, the vegetated, carbon dioxide-absorbing roof atop the Hayden Meadows Walmart will measure 40, 600 square feet.

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Stony ridges rise up from ravines, dry riverbeds and hardly vegetated plains, and curl around each other.

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Further afield, the more remote eastern Usambaras are home to the lushly vegetated and excellently protected Amani Nature Reserve.

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For that reason, those vegetated areas are now widely acknowledged as important natural sinks for greenhouse gases (GHGs).

UNESCO: Indigenous Peoples

The vegetated surface is much darker and absorbs light, which warms the surface.

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Vegetated roofs, on the other hand, grow best on flat or slightly sloped roofs that can support the soil and plants.

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The working group will gather scientific evidence to determine the role of coastal vegetated ecosystems in carbon storage and sequestration, encourage the inclusion of these systems in national carbon accounting, and consider their conservation and restoration as a viable mitigation strategy under existing climate regulation policies.

UNESCO: Social and Human Sciences