Every drop counts
Tough legislation in Denmark has prompted development of highly advanced technology to detect leaks from the water mains
In his 1776 treatise on the Wealth of Nations, Adam Smith ponders on the value of goods and the price of goods. One textbook paraphrases his thinking as follows: Why is it that “water, which has so much value in use, has no value in exchange, while diamonds, which have practically no value in use, are exchanged at high prices?” ...
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