Action-Reaction, Beakmania & Talking Birds (S04E23)

S04E01 Sweat, Beakmania & Weighing a Car S04E02 Migration, Beakmania & Living Space S04E03 Bunsen, Beakmania & Sewage S04E04 Cats, Beakmania & Dynamite S04E05 The Mouth, Beakmania & Scale S04E06 Catalysts, Beakmania & Aerosal Cans S04E07 Rubber, Beakmania & Hair S04E08 Camels, Beakmania & Density S04E09 Boomerangs, Beakmania & Circus Science S04E10 Elephants, Beakmania & X-Rays S04E11 Skin, Beakmania & Oxygen S04E12 Bread, Beakmania & Measurement S04E13 Electromagnets, Beakmania & Senses S04E14 Chimps, Beakmania & Eye Exams S04E15 Magic, Beakmania & Cosmetic Chemistry S04E16 Pigs, Beakmania & Sound Frequency S04E17 Sunken Treasure, Beakmania & Archimedian Screw S04E18 Whales, Beakmania & Optical Illusions II S04E19 Sound Barrier, Beakmania & Healthy Living S04E20 Polar Exploration, Beakmania & Circular Motion S04E21 Dogs, Beakmania & Bio-Medical Engineering S04E22 Human Growth, Beakmania & Solutions and Suspensions S04E23 Action-Reaction, Beakmania & Talking Birds S04E24 Protozoology, Beakmania & Movie Stunts S04E25 Horses, Beakmania & Refrigerators S04E26 Fingerprints, Beakmania & Flatulence