A "truly extraordinary" Neanderthal skeleton covered in "cave popcorn" is shedding new light on some of the mysteries of human evolution. Known as the "Altamura Man," it is one of the best ...

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.

Known as postcranial skeletal pneumaticity, it’s part of an extraordinarily efficient system that rapidly gets oxygen into the blood and extracts heat from the body. Today, that invasive air-sac ...