L earning how to draw hands can be a real challenge. Even experienced artists have to study the skill with dedication to master it because the human hand is a very complex piece of anatomy. Learning ...

The skeleton was discovered by paleoanthropologist Donald Johanson on November 24, 1974. The 3.2-million-year-old fossil "Lucy" at Addis Ababa's National Museum, Ethiopia, on May 7, 2013.

In many U.S. schools, the human skeletons hanging in biology or art classrooms were actual remains. Here's the origin story of one set of bones in an Erie, Penn., high school.