Rising sea levels threaten key coastal areas like the Mekong Delta, which produces the majority of Vietnam’s rice. The only thing standing between the country and the ocean is a tree.
Mangroves are the climate superheroes of the arboreal world. They grow in swamps along the coasts: thin trunks and tangled, spidery roots submerged in dark, briny water. The roots filter saltwater and can expand eroded coastlines. They also create natural storm barriers and protect agricultural land from saltwater infiltration.
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By Erin Craig for BBC Travel.