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What is Water Harvesting?

What is Water Harvesting?

Come summer and the entire nation seems to have just one word on its lips – water. Year 2000 saw one of the worst summers recorded in the history of India. The drought in the state of Gujarat and Rajasthan was the worst in decades. Fresh water, they say is a scarce resource. Is it? During the monsoons every year, we allow huge amounts of fresh water to run off our roads and pavements into the drains where it mixes with the sewage and heads straight for the rivers where we dump waste....

How does a Submarine Work?

How does a Submarine Work?

Jules Verne in his science fiction, 20,000 Leagues under the Sea, mentions a ship, Nautilus, which could dive beneath the waves and surface again when it wanted to. Even before submarines were thought about, Verne had created the blueprint of this technological marvel. Not only did he describe the machine, but he also explained, in great detail, how it worked. In fact, today’s submarines use exactly the same technology as Verne’s Nautilus did! How does a Submarine Work?...

The Scent of an Enemy

The Scent of an Enemy

It seems the fish were always a smart lot. Only, humans took some time to realise the fact. Some years ago, scientists had discovered that they identify family members with their smell. Now, scientists in Glasgow University, have discovered something new, according to a report in the journal ‘New Scientist’. They have discovered that the salmon fish go a step further. They actually keep a nose out for fish that smell like outsiders and not like family....

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....

More fuel to the CNG fire

More fuel to the CNG fire

August 16: It’s a nightmare either way. Too little, and we have thousands of autorickshaws and bus drivers in Delhi waiting for their turn to fill their fuel tanks with the new eco-friendly CNG or Compressed Natural Gas. Too much, and we have the gas pipe of a bus bursting when a careless attendant over-filled a tank at the Bhikaji Cama Place mother station. On the other side, Petroleum Minister, Mr Ram Naik is now championing the cause of low-sulpher diesel, and more recently, LPG (liquefied petroleum gas), which we use as cooking gas....

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