Category Archives: Interesting Facts

Nitrogen Facts Nitrogen Facts


Nitrogen is a colorless, tasteless, odorless, inert (unreactive) gas, yet it is vital to life. Nitrogen is 78.08% of the air. Nitrogen turns liquid at —196°C and freezes at —210°C. Liquid nitrogen is so cold that it can freeze organic substances so quickly they suffer little damage. Food such as cheesecakes and raspberries are preserved…
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Mating Facts Mating Facts


In some species of Australian marsupial mouse, the male dies after a two-week mating period. A beaver stays with its mate for many years, producing a new litter each year. A male hedgehog courts a female by circling her, sometimes wearing a deep groove in the soil, until she accepts him. Male Californian sea-lions bark…
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Iguana Facts Iguana Facts


Iguanas are large lizards that live in tropical regions around the Pacific and in the Americas. Larger iguanas are the only vegetarian lizards. Unlike other lizards, most eat fruit, flowers and leaves, rather than insects. The common iguana lives high up in trees, but comes down to lay its eggs in a hole in the…
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Ice Age Facts Ice Age Facts


The last glacial, called the Holocene glacial, peaked about 18,000 years ago and ended 10,000 years ago. Ice covered 40 percent of the world 18,000 years ago. Glaciers spread over much of Europe and North America 18,000 years ago. Ice caps grew in Tasmania and New Zealand. About 18,000 years ago there were glaciers in…
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Fault Facts Fault Facts


A fault is a rock fracture where blocks of rock have slipped past each other. Faults usually occur in fault zones, which are often along the boundaries between tectonic plates. Faults are typically caused by earthquakes. Single earthquakes rarely move blocks more than a few centimeters. Repeated small earthquakes can shift blocks hundreds of kilometers….
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Copper Facts Copper Facts


The high conductivity of copper makes it a perfect material for the core of electrical cables. Copper was one of the first metals used by humans over 10,000 years ago. Copper is one of the few metals that occur naturally in a pure form. Most of the copper that we use today comes from ores…
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Facts About Christiaan Huygens Facts About Christiaan Huygens


Christiaan Huygens was the leading figure of the Golden Age of Dutch science in the 17th century, making contributions in many fields. Christiaan Huygens (1629-1695) was, after Isaac Newton, the greatest scientist of the 1600s. Huygens was born to a wealthy Dutch family in The Hague, in Holland. He studied law at the University of…
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Car Facts Car Facts


In 1890 Frenchman Emile Levassor made the first real car, with an engine at the front. He laughed about his invention, saying, ‘C’est brutal, mais ca marche’ (`It’s rough, but it goes:). The Duryea brothers made the first successful American car in 1893. Early accidents made cars seem dangerous. Until 1896 in Britain and 1901…
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Butterfly Facts Butterfly Facts


Butterflies are insects with four large wings that feed either on the nectar of flowers or on fruit. Together with moths, butterflies make up the scientific order Lepidoptera – the word means ‘scaly wings’. There are more than 165,000 species of Lepidoptera – 20,000 butterflies and 145,000 moths. Many butterflies are brightly coloured and fly…
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Facts About Beavers Facts About Beavers


Beavers are born with innate dam-building instincts. In zoos, they regularly `repair’ concrete dams with twigs. It takes two adult beavers about 15 minutes to gnaw their way through a treetrunk with a 10 cm diameter. Mother beavers push tired youngsters ahead of them through the water, like swimming floats. Storing extra oxygen in its…
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Hot-Air Balloon Facts Hot-Air Balloon Facts


Balloons are bags filled with a light gas or hot air both so light that the balloon floats in the air. Balloons designed to carry people into the air are of two types: hot-air balloons and gas balloons filled with hydrogen or helium. Hot-air balloons have a burner that continually fills the balloon with warm…
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Facts About Algae Facts About Algae


Algae are simple organisms that live in oceans, lakes, rivers and damp mud. Some algae live inside small transparent animals. Algae vary from single-celled microscopic organisms to huge fronds of seaweed (brown algae) over 60 m long. The smallest float freely, but others, such as seaweeds, need a place to grow like a plant. Algae…
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