Other technological advances made during the Paleolithic era were clothing and shelter; the adoption of both technologies cannot be dated exactly, but they were a key to humanity's progress. As the Paleolithic era progressed, dwellings became more sophisticated and more elaborate; as early as 380 ka, humans were constructing temporary wood huts.   Clothing, adapted from the fur and hides of hunted animals, helped humanity expand into colder regions; humans began to migrate out of Africa by 200 ka and into other continents such as Eurasia . 
Despite the withdrawal of funding for the TIA and the closing of the IAO, the core of the project survived.    Legislators included a classified annex to the Defense Appropriations Act that preserved funding for TIA's component technologies, if they were transferred to other government agencies. TIA projects continued to be funded under classified annexes to Defense and Intelligence appropriation bills. However, the act also stipulated that the technologies only be used for military or foreign intelligence purposes against foreigners.