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Gold

There's gold – and lead, apparently – in them thar biosolids (Photo: Heather Lowers, USGS ...

Mining operations tend not be very good for the environment, nor does the disposal of treated solid waste that still contains potentially-toxic metals. Now, however, scientists are looking into taking that waste and harvesting its trace amounts of metals such as gold, silver and platinum. Doing so could ultimately reduce the need for mining and decrease the amount of metals entering the environment, while also turning sewage into a source of revenue.  Read More

Research team member Dr. Katarzyna Wybranska, with a wound dressing treated with the gold ...

We've been hearing a lot about the antibacterial qualities of silver, with silver nanoparticles finding use in everything from water filters to food packaging. Unfortunately, there are also concerns about the toxicity of those particles, particularly when they enter our bodies. Now, however, Polish scientists have developed what they claim is a safer alternative – an antibacterial coating that kills microbes using gold.  Read More

Pulsed near infrared light (shown in red) is shone onto a tumour (white) that is encased i...

For some time, the potential of gold nanoparticles as a diagnostics and imaging tool has been known to scientists, but new research suggests they could prove even more useful than previously thought. A team at the University of Leeds has discovered that shaping the particles in the form of nanotubes sees them take on a number of new properties, including the ability to be heated up to destroy cancer cells.  Read More

The Aventicum uses a mirascope to produce the illusion of a floating emperor

It's not unusual to get a free whistle in a box of cereal, but what about a gold bust of a Roman emperor in a wristwatch? That may sound a bit out there, but upmarket Swiss watchmaker Christophe Claret's Aventicum watch not only has a Roman theme, but also a tiny engraved golden bust of Emperor Marcus Aurelius that seems to float over the center of the dial.  Read More

The MCS costs about US$500

According to the World Gold Council, about 195,300 tons of gold have been dug out of the ground in all of human history. Countless lives have been lost obtaining the rare metal, and in the developing world, which currently accounts for 20 percent of the world's gold production, small-scale mining and smelting under primitive conditions poses a major health hazard. To help alleviate this, a team from Argonne National Laboratory and the US Environmental Protection Agency are developing a prototype mercury capture system to reduce heavy metal pollution.  Read More

Goldgenie's 24 karat gold-plated bicycle: golden gear cluster

Goldgenie's team of undeniably talented artisans have taken an aluminum framed road bike and gold plated more or less the whole damn thing, from the tips of the handlebars, to the spokes, to the derailleur, chain and every single cog on the gear clusters.  Read More

There's gold in that thar belly – or at least there might soon be, if a new form of liposu...

Liposuction may be a popular method of instant body fat reduction, but it certainly isn't perfect. Patients can experience bruising, there can be lumps that have to be addressed with a second procedure, plus things other than fat cells – such as connective tissue and nerves – can inadvertently also get removed. Two researchers, however, are developing what could be a better form of liposuction, that involves first using injected gold microparticles to melt the fat.  Read More

The scientists were able to confirm the 7.68 oz (217.78 g) specimen as a single-crystal pi...

Scientists at Los Alamos National Laboratory (LANL) in the US have confirmed a 7.68 oz (217.78 g) piece of gold is in fact a singular crystal, increasing its value from around US$10,000 to an estimated $1.5 million. The specimen, the largest single crystal piece of gold in the world, was discovered in Venezuela decades ago, but it is only by using advanced probing instruments that experts can now verify its authenticity.  Read More

An MIT rendering of a bacterial cell, trailing fibers containing gold nanoparticles and qu...

Scientists at MIT are developing hybrid materials that are a cross between living bacterial cells and non-living components such as gold nanoparticles or quantum dots. The resulting "living materials" are able to respond to their environment like regular living cells, while also doing things like conducting electricity or emitting light.  Read More

A close view of the nanomesh (inset)

We're coming just that much closer to electronic devices such as TV screens that can be rolled up in a tube, or phones that can be folded up and stuffed in a pocket. Scientists at the University of Houston have created a gold nanomesh material that is conductive, transparent and flexible – a combination that they claim has never before been achieved.  Read More

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