Ladders were invented more than 10000 years ago.
Ladders are used by fighter pilots, firemen, army soldiers and many other people.
Most ladders are made from aluminium.
Ladders can be made of other materials like wood, strong grass and rope.
Some countries have strict rules and regulations concerning safety when ladders are used in construction sites.
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A library is a place where you can find many different sources of information such as books, DVDs, videotapes, magazines and cassettes. You can usually borrow materials from a library and keep them for a Read more…
Lava lamps were invented more than 50 years ago. Lava lamps do not actually contain lava. The most expensive lava lamp ever made cost more than 10000 US dollars! The liquids inside a lava lamp can be Read more…
Ladybugs are actually beetles. Ladybugs will make themselves smell really bad when they are afraid. Ladybugs eat many pests, which is good for plants. Not all ladybugs have spots on them. Ladybugs can live for Read more…
