Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
The Vought F4U Corsair radial-engined naval fighter was one of the most prominent American aircraft of the Second World War.
The fastest track-based means of urban transport.
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.
The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
Penguins are birds living in the Antarctic and adapted to cold temperature and swimming.
Quetzalcoatlus was one of the largest known flying animals of all time.
The earliest version of the lute appeared in ancient Mesopotamia.
The naval battle fought by the British Navy against the German Navy was the largest sea battle in World War I.
Solomon's temple became one of the most important symbols of Jewish architecture.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
Marine mammals, the largest known animals to have ever existed.
This animation demonstrates the anatomy of tulips, daffodils and snowdrops.
This animation demonstrates the geographical locations of the Earth's major cities.
Computer hard disk drives are devices of magnetic data storage.
Many freshwater fishes are also popular as food.
The dromedary is an indispensable animal for inhabitants of the deserts.
Gladiators were combatants who entertained audiences in fights against each other or wild animals in ancient Roman arenas.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
The battleship USS Missouri, first deployed during WWII was also deployed in the Gulf War.