Articles on Gold

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Researchers studied whether subtly being exposed to different colors could change tipping behavior. Anutr Yossundara/Shutterstock.com

Want better tips? Go for gold

Studies show a weak relationship between tip amounts and quality of service. But the color gold seems to have a way of making diners feel wealthier – and more generous.
Section of a tumor observed with an optical microscope. The two white forms with brown borders are blood vessels. Inside, gold nanoparticles accumulate against their walls. Mariana Varna-Pannerec (ESPCI)

Destroying tumors with gold nanoparticles

Gold can be used to make jewelry, but also to fight cancer. Several clinical trials are currently underway in the United States where patients are being treated with gold nanoparticles.
JCF Johnson’s, Euchre in the bush, circa 1867, depicts a card game in a hut on the Victorian goldfields in the 1860s. Oil on canvas mounted on board, 42.0 x 60.2 cm. Courtesy of the Art Gallery of Ballarat

How gold rushes helped make the modern world

The discovery of gold in California 170 years ago was a turning point in global history. The gold rushes are not mere historic footnotes – they continue to influence the world in which we live today.
Central authorities are still important to create legitimacy in a cryptocurrency. Shutterstock

The blockchain does not eliminate the need for trust

You may have imagined the blockchain would lead to a world without governments or institutions veryifying transactions, research shows that it probably won't.

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