It’s not any snake, but some species that are adapted to living on trees. It’s also not really flying. Gliding would describe what they do better. As they jump, they flatten their body and make slither movements through the air, gliding maybe at a 45 angle downwards.
I actually watched that episode last night, so that post was kinda jumping at me. What are the odds…
Sagan, a real teacher. Not only smart, there are quite a few smart people. But also able to make something complicated easily understood. To make something abstract sound straight. To make something minds can’t grasp comprehensible. A beautiful ability!