Other languages use different ways, such as word endings
Mouth breathing let them move more air in and out of the lung, which let them run for longer distance.
Fossil remains of our distant and near relatives are indispensable for tracing the brain's evolution.
Just as important as the brain in language development are changes in the larynx (the voice box).
Trying to establish when language began is difficult, because there's no direct evidence.
Brains are hungry organs, about 20% of calories you consume go to your maintaining your brain. A large brain requires a higher quality diet.
