The raucous calls of tree hyraxes — small, herbivorous mammals — reverberate through the night in the forests of West and Central Africa, but their sound differs depending on the location. Tree hyraxes living between the Volta and Niger rivers make a barking call that is distinct from the shrieking […]

When humans look out at a visual landscape like a sunset or a beautiful overlook, we experience something — we have a conscious awareness of what that scene looks like. This awareness of the visual world around us is central to our everyday existence, but are humans the only species […]