Metals

Chromium and nickel nanoparticles from tattoo needles may be responsible for some allergic reactions to tattoos.

In the pure white snow of Antarctica, scientists have found rare isotopes that don't occur naturally on Earth. The isotope, known as iron-60, is usually forged in the crucible of supernova explosions, and the researchers believe it fell to Earth as our solar system passed through an interstellar gas cloud.

New Hubble observations show that WASP-121b is a planet that’s so intensely hot it’s vaporizing heavy metals and venting them into space. As if that wasn’t enough, the poor planet is also being stretched into a football shape thanks to the strong gravity of its host star.

One year out from the Tokyo games Japan has unveiled its Olympic medals, which will adorn winning athletes in metals recycled from discarded gadgets. Tons of scrap metal was recovered from small electronics collected all over the country for the initiative.

The South Pole-Aitken basin on the Moon is the largest impact crater in the solar system, measuring about 2,500 km (1,550 mi) across at its widest point. And now scientists have detected something strange buried under the crater.

Although smartphones perform many tasks on their own, they're also able to make devices such as drones, robots and cameras cheaper and/or more capable by acting as their "brains." One of the latest gadgets to receive such a treatment is the humble – and potentially treasure-finding – metal detector.

The blood of great white sharks found in the waters off the coast of South Africa has been found to contain quantities of heavy metals that would be dangerously toxic to other forms of marine life, according to a newly published study.

​Yesterday the North American Handmade Bicycle Show (NAHBS) wrapped up for another year, held once again in Sacramento, California. Among the many fascinating bikes that we checked out was a model that's built from Allite's revolutionary new Super Magnesium.

Traditionally, welding has been limited to materials that share similar properties. But now, scientists are claiming a breakthrough method that can weld together materials as different as glass and metal, thanks to ultrafast laser pulses.

Capturing carbon from the air and sequestering it is emerging as a viable strategy, and now scientists have developed a new method to turn CO2 gas back into solid coal, that can then be buried, or even used for electronic components.

​Metal fibers are strong, but can't be stretched very far. Rubber fibers are stretchy, but they're not very strong. Well, scientists have combined the selling points of both materials into one type of hybrid fiber. It could be used in applications such as soft robotics.

​Although it's already possible to create colored images on metal surfaces using lasers, different TYPES of lasers have to be used for different effects. Now, however, Russian scientists have developed a method of producing multiple effects using one commercially-available laser.