Dr Alice has been shark hunting in the Arctic waters (i.e. through scientific papers) and discovered the oldest vertebrate in the world is at least 272 years old. Meanwhile, back on the land, why are two scientists riding a roller coaster holding a bag with an artificial kidney and stones? Dr Karl is considering a 'fusion' breakfast after hearing that spicy food may be good for your health. Fruit salad with chilli anyone? And why does the Zebra finch sing a different song to its eggs just before they hatch?