This story appears in the November 2017 issue of National Geographic magazine. Name the last place where you saw seaweed on the menu, not including a Japanese restaurant. Drawing a blank?

However, if you have dried or dehydrated seaweed ... seaweed and discarding it for food safety would be a good idea.

From sustainable food to biofuel, there’s more to this underrated plant than you might think – and it can help improve the ...