The vagus nerves, lightspeed travel and peripheral night vision

Is blood really a liquid? Can cats predict a period? And would a soft drink save your life in the wild? Dr Karl and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl  Stay up to date with Theresa's work via her socials: @drtheresalarkin