S3E9: Ancestors | Brain Freeze

S3E1: Blood | Brain Freeze

Knowles and McCork ask the question 'How does my heart keep beating?'

S3E2: Plastic | Brain Freeze

Knowles and McCork ask the question 'How much plastic is there in the oceans?'

S3E3: Invisible | Brain Freeze

Knowles and McCork ask the question 'Which animal can turn invisible?'

S3E4: Space Food | Brain Freeze

Knowles and McCork ask the question 'Could pineapples grow on the moon?'

S3E5: Teeth | Brain Freeze

Knowles and McCork ask the question 'Why do we have baby teeth?'

S3E6: Salty | Brain Freeze

Live from the seaside, Knowles and McCork ask the question 'Why is the sea salty?'

S3E7: Plant Life | Brain Freeze

Knowles and McCork ask the impossible question 'How many plants are there in the world?'

S3E8: Ice | Brain Freeze

McCork and Hucklebuck attempt to break the record for the world's biggest ice cream cone.

S3E9: Ancestors | Brain Freeze

Dr Knowles and Professor McCork ask the question 'Are we all related?'

S3E9: Ancestors | Brain Freeze

Dr Knowles and Professor McCork ask the question 'Are we all related?'

S3E11: Parachute | Brain Freeze

McCork and Ms Hucklebuck are in the sky as they ask 'How does a parachute work?'

S3E12: Walk | Brain Freeze

McCork and Knowles ask 'How long would it take to walk the Earth?'

S3E13: Atoms | Brain Freeze

The crack TV science team investigate how many atoms there are in our bodies.

S3E14: Taste | Brain Freeze

Knowles and McCork ask 'Why do we make saliva while we eat?'

S1E15: Digestion | Brain Freeze

Knowles and McCork explore the digestive system of Colin the floor manager.