Brown Adipose Tissue. Everyone is familiar with white adipose or fat tissue, which provides insulation and, by storing triglyceride, serves as an energy depot. Many mammals also have brown adipose tissue, which also stores triglyceride, but has the unique ability to generate heat.
What is the Earliest Art of Northern Africa? The oldest prehistoric art from North Africa is the early Stone Age quartzite figurine from Morocco known as the Venus of Tan-Tan. It has been carbon-dated to the period 200,000-500,000 BCE, and probably was created by advanced Acheulian peoples of north-western Africa on the main southerly route into Southern Europe.
Terracotta heads and figures have been found in Ife, dating from the 12th to 15th century - the same period as the first cast-metal sculptures of this region. At Jenne, further north in Mali, archaeologists (followed unfortunately by thieves) have recently unearthed superb terracottas of the same period.