Researchers studied whether subtly being exposed to different colors could change tipping behavior.
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.
In just a few years, Burkina Faso has become the fourth largest gold exporter in Africa. But with 43% of the population still below the poverty line, what are the local benefits?
Gold jewellery has traditionally been central to dowries in India.
Increases in gold prices on world commodities markets are linked to fewer surviving girls in India. This is related to gold often being part of bridal dowries.
The rise and fall in Bitcoin’s value places it among the greatest market bubbles in history.
Bitcoin's rise and fall to date already makes it one of the greatest market bubbles in history. In turbulent times, some have suggested it as a substitute for gold, but it lacks some vital attributes.
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)
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.
This 2013 photo shows Bitcoin tokens at a shop in Utah. What does the future hold for the volatile cryptocurrency?
(AP Photo/Rick Bowmer)
The fate of Bitcoin’s fate is highly unpredictable and dependent on what governments will do in the future.
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
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.
Hailie Selassie thought his country's gold could rival the biggest deposits in the world. He may be proven right.
Why some corporations are quick to respond to criticism, and others hide away.
Twinkle, twinkle, little star…
The precious metal is literally extra-terrestrial, produced in the heart of the stars. How and under what conditions? Scientists know more thanks to a double astrophysical observation.
The Great Mosque of Djenné, in Mali, has a history dating back to the 13th century which can inspire regional trade in West Africa.
West Africa has lessons to learn from its ancient empires and colonial governments on regional trade and integration.
Central authorities are still important to create legitimacy in a cryptocurrency.
You may have imagined the blockchain would lead to a world without governments or institutions veryifying transactions, research shows that it probably won't.
Illustration of hot, dense, expanding cloud of debris stripped from the neutron stars just before they collided.
NASA's Goddard Space Flight Center/CI Lab
Until the recent observation of merging neutron stars, how the heaviest elements come to be was a mystery. But their fingerprints are all over this cosmic collision.
alredosaz / shutterstock
A gold rush brings in lots of money in the short-term, but leaves a toxic legacy.
Cooking with gold is in fashion, but the practice has been happening for centuries.
Modern chefs are serving up ice cream, cakes, even sushi covered in gold. But gold in food came into its own in late medieval Europe, when eating gold wad thought to be virtuous, and one could find gilded whole roast peacocks.
Mining company Banro closed artisanal mining sites like this one in the DRC.
USAID U.S. Agency for International Development/Flickr
Industrial gold mining companies in eastern Congo have faced violent attacks over friction between industrial and artisanal mining.
The cryptocurrency is now starting to challenge gold as the investment of choice.
The physicality of gold is both a plus and a minus.
New financial innovations and products are constantly being touted as the safe haven of the future. But physical gold has properties that will cause it to stick around.
Gold torc found in Staffordshire.
oe Giddens/PA Wire/PA Images
Torcs found in the Staffordshire hills can reveal a lot about Iron Age society.
Cock and bullion: the $2,000 pizza.
On sale in New York for US$2,000. Don't all rush at once.