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The cause of a heart attack is the blockage of a coronary artery. It is one the most common causes of death.
While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.
The European badger is an omnivorous, nocturnal animal. Badger colonies live in large burrow systems, called setts.
Tardigrades can survive in extreme environments, they can even stay alive in outer space.
The Northern white-breasted hedgehog rolls into a ball to protect itself.
This animation demonstrates how muscles and vertebrae move the head.
This animation presents levels of biological organisation from the level of the individual organism to the level of cells.
Adrenaline, also known as epinephrine, is a hormone produced in our body in stressful situations and plays an important role in the fight-or-flight response.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
The fat-tailed scorpion is one of the world's most dangerous scorpions.
The dromedary is an indispensable animal for inhabitants of the deserts.
The topmost layer of our skin is the epidermis, which contains melanocytes.
The inability to differentiate certain shades of colour is called colour vision deficiency.
The dodo is an extinct species of birds that used to be native to the island of Mauritius. It has become the symbol of extinction.
The Arctic tern is famous for its long migration route: it flies from the Arctic to the Antarctic and back again each year.
Let’s see how a bear, which the most popular children's toy was modelled after, lives in real life.
Deinonychus antirrhopus, the 'terrible claw', was a carnivorous dromaeosaurid dinosaur.
A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary embolism if it enters the lungs.
Eurypterids are an extinct group of Palaeozoic aquatic arthropods.
One of the most common tree of the pine family, native to Eurasia.