North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the earth's land area and about 4.8% of its total surface. North America is the third largest continent by area, following Asia and Africa,^[5] and the fourth by population after Asia, Africa, and Europe.^[6] In 2013, its population was estimated at nearly 565 million people in 23 independent states, or about 7.5% of the world's population, if nearby islands (most notably the Caribbean) are included.

This is another aside about Europe.

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This is an aside about North America.

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This is an aside about Europe

It has two paragraphs

More info about Asia.