What Are Animals Saying?
https://www.pbs.org/wgbh/nova/video/nova-wonders-what-are-animals-saying
Can We Build A Brain?
https://www.pbs.org/wgbh/nova/video/nova-wonders-can-we-build-a-brain
For extras and more episodes of NOVA Wonders, visit http://www.pbs.org/wgbh/nova/wonders/