Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the question 'How does my heart keep beating?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the question 'How much plastic is there in the oceans?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the question 'Which animal can turn invisible?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the question 'Could pineapples grow on the moon?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the question 'Why do we have baby teeth?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Live from the seaside, Knowles and McCork ask the question 'Why is the sea salty?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask the impossible question 'How many plants are there in the world?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. McCork and Hucklebuck attempt to break the record for the world's biggest ice cream cone. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Dr Knowles and Professor McCork ask the question 'Are we all related?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. In this time zone special, Knowles and McCork ask 'Why does the Earth spin on its axis?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork ask 'Why do we make saliva while we eat?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. McCork and Knowles ask 'How long would it take to walk the Earth?'. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. The crack TV science team investigate how many atoms there are in our bodies. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. Knowles and McCork explore the digestive system of Colin the floor manager. Show more

Doctor Knowles and Professor McCork get to the bottom of life's questions. McCork and Ms Hucklebuck are in the sky as they ask 'How does a parachute work?'. Show more