The Times Higher Education World University Rankings 2020 includes almost 1,400 universities across 92 countries, standing as the largest and most diverse university rankings ever to date. The table ...

A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.

The Palestinian Jafra Dabke Team performs a traditional dabke dance while wearing latex gloves and surgical masks, in Tarqumya, a town in the occupied West Bank. Photograph by Hazem Bader, AFP/Getty ...