A version of this story appears in the February 2017 issue of National Geographic magazine. Citrus, in many ways, stands alone. So many cultivated species have come from so few primary ancestors.

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Many of us, including me, were taught to brush our teeth and then use floss to remove anything the toothbrush missed. Even dental hygienists floss after they're finished brushing our teeth.

Unrefined golden caster sugar with some molasses left in is also available. This gives baked dishes a more intense flavour and a darker result. Ideal for meringues, caster sugar is used in baking ...

“Unfortunately, dentists can’t be fooled into thinking you floss regularly if you floss ... while acidic foods and drinks, ...

Icing sugar comes in different grades according to how finely the sugar is milled, denoted by the number of Xs on the packet. Icing sugar easily absorbs moisture and odours – keep in an airtight ...

Both black and white rhinoceroses are actually gray. They are different not in color but in lip shape. The black rhino has a pointed upper lip, while its white relative has a squared lip.

We tested it, and we recommend the new version. September 2024 A white T-shirt is the ultimate blank canvas. Versatile and classic, it can blend in or stand out, depending on the outfit and the ...

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“Unfortunately, dentists can’t be fooled into thinking you floss regularly if you floss ... while acidic foods and drinks, ...