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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

French and U.S. presidential elections in 2012 illustrate the durability of political culture and ho French and U.S. presidential elections in 2012 illustrate the durability of political culture and ho
Angry jeers from whites rain down on Elizabeth Eckford, one of the first African American students ... Angry jeers from whites rain down on Elizabeth Eckford, one of the first African American students ...
Lalla Essaydi, La Grande Odalisque, from the series Les Femmes du Maroc (The Women of Morocco). Lalla Essaydi, La Grande Odalisque, from the series Les Femmes du Maroc (The Women of Morocco).
Native American casinos remain a topic of both controversy and envy. Shown here is Corey Two Crow as ... Native American casinos remain a topic of both controversy and envy. Shown here is Corey Two Crow as ...
South American Indigenous Woman and Child South American Indigenous Woman and Child
Video: Bulk flow - factors that influence bulk flow

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