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What are Canal Locks?

What are Canal Locks?

In some rivers or canals the water is not too deep for large ocean-going ships. In such places large watertight compartments are built that help ships and boats go up or down different levels on rivers or canals. These are called canal locks. In certain areas, man-made canals are constructed to connect two water bodies. These canals are built to help cut down the distance a large ship would otherwise have to take to reach its destination....

Scientists Find More on the Eureka Man

Scientists Find More on the Eureka Man

Why do ships float on water when in fact they should sink? Why does paper float on water and a paperweight sink? The answer to these questions was accidentally discovered 2200 years ago by the Greek inventor and mathematician, Archimedes. One day, while getting into his bath he noticed water spilling over the sides. In a flash, Archimedes realised the relation between the water that had fallen out and the weight of his body – in other words he discovered why some objects float and some sink!...

Marine Militants: Bioinvasion propagated through Cargo Ships

Marine Militants: Bioinvasion propagated through Cargo Ships

What would happen if all the lions in Africa are carried away to some other place? The deer population will rise as there will not be anyone to kill them. With this population boom, the deer would need more food. After a point, there will no grass left to feed subsequent generations. This would lead to the destruction of the entire ecosystem which thrives and sustains itself on the grass. And the grasslands will turn into a desert....

Rats

Rats

Excerpts from ‘Rats’. First published by Vigyan Prasar, India Now at this time there was a great plague of rats in the London Docks. They were specially fierce rats, whose ancestors had come on steamers from Hong Kong along with tea and ginger and silk and rice. These rats ate all sorts of food which are brought to London in ships because we cannot grow enough food in England to feed all the people here. They are wheat from Canada and cheese from Holland, and mutton from New Zealand and beef from Argentina....

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