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Articles on Metals

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Aerial view of the Pinto Valley copper mine, located on private and U.S. national forest lands in Gila County, Ariz. Wild Horizon/Universal Images Group via Getty Images

Gold, silver and lithium mining on federal land doesn’t bring in any royalties to the US Treasury – because of an 1872 law

Hard rock minerals like gold, silver, copper and lithium on public lands belong to the American public, but under a 150-year-old law, the US gives them away for free.
The search for the room-temperature superconductor continues. Charles O'Rear/Corbis Documentary via Getty Images

Scientists have been researching superconductors for over a century, but they have yet to find one that works at room temperature − 3 essential reads

Claims about the discovery of a coveted room-temperature superconductor peppered the news in 2023. We pulled three stories from our archives on what superconductivity is and why scientists study it.
An ambitious clean energy transition requires more of the metals and minerals used to build clean energy technologies. (AP Photo/Mary Altaffer)

How recycling could solve the shortage of minerals essential to clean energy

The demand for the minerals needed to build clean energy technology currently exceeds the available supply. If this issue continues, governments may find it hard to reach their clean energy targets.
Factory robots could soon acquire a range of skills, including the ability to choose how to make things. studiostockart/DigitalVision Vectors via Getty Images

Artisan robots with AI smarts will juggle tasks, choose tools, mix and match recipes and even order materials – all without human help

Custom fabrication involves taking measurements, choosing tools, deciding on sequences of steps and ordering from a menu of materials. AIs under development promise to take humans out of the loop.
While people may be familiar with precious metals, which are often at the heart of conflicts, there are also metals that are essential to good health. (Shutterstock)

Rare metals play a strategic and essential role in health

Iron fights anemia. Bismuth relieves gastric problems. Lithium acts against depression and gold can treat rheumatoid arthritis. Metals are precious tools for good health.
Manganese nodules on the Atlantic Ocean floor off the southeastern United States, discovered in 2019 during the Deep Sea Ventures pilot test. National Oceanographic and Atmospheric Administration

A rush is on to mine the deep seabed, with effects on ocean life that aren’t well understood

Companies are eager to mine the deep ocean for valuable mineral deposits. But scientists are concerned about impacts on sea life, including creatures that haven’t even been discovered yet.
Artisanal small-scale gold mining polluted this stream and deforested sections of the Madre de Dios area of Peru. Mario Tama/Getty Images

Gold rush, mercury legacy: Small-scale mining for gold has produced long-lasting toxic pollution, from 1860s California to modern Peru

Small-scale gold mining operations in developing countries are major sources of toxic mercury pollution, using techniques that haven’t changed much since the California Gold Rush 150 years ago.
Pictured is a slag pile at Broken Hill in New South Wales. Slag is a man-made waste product created during smelting. Anita Parbhakar-Fox

Our ability to manufacture minerals could transform the gem market, medical industries and even help suck carbon from the air

Manufacturing minerals is an expanding field of study. Making more of them could help alleviate various pressures faced by our growing population. But how are they made, and where can they be used?
Mineral processing tailings are pumped into a storage facility. Are there still valuable commodities in this waste?

Treasure from trash: how mining waste can be mined a second time

Identifying mine waste materials as economic resources will help support global demand for critical metals, boosting the mining industry during the downturn. All with environmental benefits.

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