Animals
Why Do Octopuses Have Three Hearts? Blue Blood and Arms That Think
Why do octopuses have three hearts, why is their blood blue and how can their arms “think”? The science behind the body of the ocean’s strangest intelligence.
Animals
Surprising behaviours and abilities from the animal kingdom.
Animals
Why Do Cats Purr? How Purring Works and What It Means
Do cats only purr when they are happy? How purring is produced in the larynx, what new research revealed, and what your cat may actually be telling you.
Animals
Why Do Dogs Wag Their Tails? The Hidden Meanings of Tail Language
Does a wagging tail always mean a happy dog? What the height, speed and even the left–right direction of a dog’s wag reveal, according to research.
Animals
How Do Migrating Birds Find Their Way? Sun, Stars and a Magnetic Compass
How do migrating birds cross thousands of kilometres without getting lost? Sun and star compasses, magnetic sensing in the eye and record-breaking journeys.
Animals
How Do Bees Make Honey? The Journey from Nectar to Honey
How do bees make honey, why doesn’t honey go off, and how do bees tell each other where the flowers are? The chemistry and communication inside a hive.
Animals
Why Do Zebras Have Stripes? Solving a 150-Year-Old Puzzle
Why are zebras striped? We weigh up camouflage, cooling and fly protection, and explain why horseflies struggle to land on a striped coat.
Animals
Why Do Cats Always Land on Their Feet? The Physics of the Righting Reflex
How do cats twist in mid-air to land on their feet? The righting reflex, the angular-momentum trick that puzzled physicists, and the real risks of high falls.