One group of scientists believes that cooking was invented between 2.3 and 1.8 mya.
Other researchers posit a much more recent date: between 38,000 BCE and 8000 BCE.
The oldest known agricultural settlement is in Cyprus, dating from 9100-8600 BCE.
These more complex tools include biface stones, which were worked extensively on both faces, and include the first hand axes.
Discontinuity theory holds that human language is so unusual that it can only be explained if it evolved quickly due to a genetic basis.