LIBYA: Faunal remains from the Takarkori rock shelter in southwestern Libya underscore just how different the environment was there 10,000 years ago. While today the site is in the Sahara Desert, at the beginning of the Holocene period the area was dotted with lakes, ponds, and waterways. Humans used the shelter between 10,200 and 4,650 years ago. Their discarded food scraps around the site are giving experts insight into their diet. Of 18,000 bones thus far recovered, nearly 80 percent belong to fish species, mainly catfish and tilapia.