Space science
A 'second moon' made of gold appears in the heart of the Earth?
These massive structures, resembling two submerged continents rising from the Earth's core, have baffled scientists for years and may be ancient gold and platinum.
Metal
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Articles about Metal
604 published items.
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Why are pencils called pencils even though they don't contain lead?
We call it a brush pen because its nib is made of feathers; we call it a fountain pen because its nib is made of metal. So why is a pencil called a pencil when it is not…
1001 mystery
Mysterious metal sphere on Japanese beach
The 1.5m diameter hollow sphere is sparking much speculation on social media about the object's origin.
Discover science
The 3 largest tank graveyards in the world: From warriors to scrap metal
Once out of service, the tanks become scrap and are exposed to the elements for decades.
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How much silver has ever been discovered in the world?
Experts estimate that the amount of silver discovered on Earth could fit into a cube with sides 55m long.
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How rare are rare earths really?
The rare earth elements, a group of 17 metals, are relatively abundant in the Earth's crust but their extraction is extremely difficult.
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As an essential element for 'power generation,' why is cobalt so controversial?
Global cobalt demand is expected to quadruple by 2030, driven largely by the widespread adoption of electric vehicles, according to a report by the World Economic Forum.
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China and Russia develop extreme cold-resistant material that can maintain mechanical properties at -150°C
The material is expected to be ideal for making mechanical parts and structures that operate in extremely cold conditions.
Archeology
Metal detector, unexpectedly found 2,500 year old ancient sword
An amateur metal detectorist has found a valuable treasure trove in a bog near Veksø, Denmark. Among them is a sword that is about 2,500 years old.
1001 mystery
Mysterious object appears on Florida beach
Archaeologists discovered a wooden and metal object, about 25m long, appearing on the coast of Florida, USA when the tide receded.
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Discovered a place containing a giant 'red treasure' many times larger than an underground mine, which can be recycled infinitely
A 97-year-old mining company is turning what would otherwise be discarded in drawers and landfills into a precious material the world needs.
Space science
Why is gold the most malleable metal?
The structure and way its atoms bond together makes gold so flexible that it can be rolled 400 times thinner than a human hair.
Space science
Satellite debris poses a serious threat to the atmosphere
Hundreds of defunct satellites fall through the Earth's atmosphere every year, and the number is growing rapidly.
Entertainment
Marvel's two strongest metals on the scale of comparison
The MCU movies have introduced audiences to two super metals, Adamantium and Vibranium. But which is the stronger material?
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4.3 billion years ago, the Earth received a 'golden rain' with a mass of 6 billion tons, so where did all that gold go?
Gold is not only a precious metal, a symbol of wealth and luxury, but also carries within it a mysterious cosmic story about its formation from collisions between neutro…