The World Health Organization this week declared an outbreak of Ebola in Central Africa a public health emergency. Health ...

There are many treasures to glean from a glance at a beautifully wrought antique map -- just don't expect that any sailor worth his salt ever actually used one while at sea. "Sailors wanted clean ...

NEW YORK — Not much is known about how Renaissance cartographer Martin Waldseemüller created his 1516 "Carta marina" world map, possibly the most up-to-date conception of the world at the time.

Displaying values on a map chart is more meaningful than handing someone a sheet of data. Thanks to Microsoft Excel’s Geography data type, creating a map chart is easier than you might think. Most ...

When I shared my highlights of Mary Meeker's ginormous presentation about the future of the Internet, one graph got more attention than everything else combined. It's the chart that leads this article ...

The visit of Chinese President Xi Jinping to the U.S. has prompted lots of definitive articles explaining China. We here at Wonkblog put together a voluminous one of our own. But maybe you prefer not ...