Scientists believed the humans were from East Africa. This changed they found 2.4--year-old tools in Algeria. Scientists say the first were from Algeria. found 250 tools and animal . The bones show that early humans cut up .
Archaeologists have been digging on this for 25 . The is 200 miles from Algeria's . The project said humans killed for meat 600,000 years than we thought. The tools showed early humans were more than . Scientists now want to find older stone tools.
