Medical research

2 win medicine Nobel for showing how we react to heat, touch

Two scientists won the Nobel Prize in medicine on Monday for their discoveries into how the human body perceives temperature and touch, revelations that could lead to new ways of treating pain or even heart disease.

Medical research

3 win Nobel medicine prize for discovering hepatitis C virus

Three scientists won the Nobel Prize in medicine Monday for discovering the liver-ravaging hepatitis C virus, a breakthrough that led to cures for the deadly disease and tests to keep the scourge out of the blood supply.

Genetics

Longevity's secrets sought in DNA of 100-year-olds

(AP) -- George Eberhardt turned 107 last month, and scientists would love to know how he and other older folks like him made it that far. So he's going to hand over some of his DNA. He's one of 100 centenarians taking part ...

Psychology & Psychiatry

No pain, no gain? How the brain chooses between pain and profit

Imagine having to choose over and over between what you enjoy doing and the pain that it might cause you, whether physical or emotional. If you live with conditions such as depression, anxiety, or chronic pain, you are probably ...

Medical research

Study finds the SARS-CoV-2 virus is not viable on cash banknotes

When the COVID-19 pandemic hit, many businesses stopped accepting cash payments in an effort to reduce the spread of the virus. While neither the CDC nor WHO ever banned the use of paper money, many businesses still only ...

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Money

Money is anything that is generally accepted as payment for goods and services and repayment of debts. The main functions of money are distinguished as: a medium of exchange, a unit of account, a store of value, and occasionally, a standard of deferred payment.

Nearly all contemporary money systems at the national level are fiat money systems. Fiat money is without value as a physical commodity, and derives its value by being declared by a government to be legal tender; that is, it must be accepted as a form of payment within the national boundaries of the country, for "all debts, public and private". By law, the refusal of a legal tender (offering) extinguishes the debt in the same way acceptance does. Some bullion coins such as the Australian Gold Nugget and American Eagle are legal tender, however, they trade based on the market price of the metal content as a commodity, rather than their legal tender face value (which is usually only a small fraction of their bullion value).

The money supply of a country is usually held to consist of currency (banknotes and coins) and 'deposit money' (the balance held in checking accounts and savings accounts). These demand deposits usually account for a much larger part of the money supply than currency. Deposit money is intangible and exists only in the form of various bank records. Despite being intangible, deposit money still performs the basic functions of money, as checks are generally accepted as a form of payment and as a means of transferring ownership of deposit money.

More generally, the term "price system" is sometimes used to refer to methods using commodity valuation or money accounting systems.

This text uses material from Wikipedia, licensed under CC BY-SA