NOVA covers exciting and controversial research with chimpanzees who have been trained to express themselves with human symbols. Are they speaking their minds? Or are they just aping their trainers?
ستظهر التعليقات هنا بمجرد مشاركة الأعضاء لأفكارهم.
لا توجد موسيقى بعد
إضافة موسيقى تصويريةإعلان
