International

Chilean scientist plans to clean up mining with ‘metal eating’ bacteria

AFP

Starving microorganisms capable of surviving in extreme conditions have already managed to “eat” a nail in just three days.

In Chile, a scientist is testing “metal-eating” bacteria she hopes could help clean up the country’s highly-polluting mining industry.

In her laboratory in Antofagasta, an industrial town 1,100-kilometers north of Santiago, 33-year-old biotechnologist Nadac Reales has been carrying out tests with extremophiles — organisms that live in extreme environments.

Reales came up with her idea while still at university as she was conducting tests at a mining plant using microorganisms to improve the extraction of copper.

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“I realized there were various needs in the mining industry, for example what happened with the metallic waste,” she told AFP.

Some metals can be recycled in smelting plants but others, such as HGV truck hoppers that can hold 50 tons of rock, cannot and are often discarded in Chile’s Atacama desert, home to the majority of the country’s mining industry.

Chile is the world’s largest producer of copper, which accounts for up to 15 percent of the country’s GDP, resulting in a lot of mining waste that pollutes the environment.

In her research, Reales, who now runs her own company Rudanac Biotec, concentrated on iron-oxidizing bacteria called Leptospirillum.

She extracted the bacteria from the Tatio geysers located 4,200 meters above sea level, some 350 kilometers from Antofagasta.

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The bacteria “live in an acidic environment that is practically unaffected by relatively high concentrations of most metals,” she said.

“At first the bacteria took two months to disintegrate a nail.”

But when starved, they had to adapt and find a way of feeding themselves.

After two years of trials, the result was a marked increase in the speed at which the bacteria “ate,” devouring a nail in just three days.

– Surprising benefit –

Reales says “chemical and microbiological tests” have proved the bacteria are not harmful to humans or the environment.

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“We’ve always seen a lot of potential in this project that has already passed an important test in the laboratory,” said Drina Vejar, a microbiologist who is part of a four-person team working with Reales.

“It’s really necessary at this time when we have to plan for a more sustainable development, especially in all these cities with so many polluting industries.”

Mining companies have shown interest in the research but while Rudanac Biotec previously benefitted from a state fund for start-ups, the company needs investment to move on to its next stage of trials.

Reales says she needs money to see if her method will “eat a medium sized beam or a hopper.”

When the disintegration process is complete, what remains is a reddish liquid residue, a solution known as a lixiviant that itself possesses a surprising quality.

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“After biodisintegration the product generated (the liquid) can improve the recovery of copper in a process called hydrometallurgy,” said Reales.

Essentially, the liquid residue can be used to extract copper from rock in a more sustainable manner than the current use of chemicals in leaching.

Reales says it means green mining is “totally feasible.”

That is of great interest to mining companies that could use it to improve their large scale extraction of copper or other minerals, while also reducing their pollution, something they are required to do by law.

Reales recently submitted a request for an international patent for her technology, but more importantly she hopes it will help reduce metal waste blotting the landscape in the mining regions of her country.

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Central America

U.S. extradites Iranian man over alleged sanctions evasion scheme

The United States has extradited from Panama an Iranian national accused of evading economic sanctions against Iran by illegally exporting U.S. technology. He is scheduled to appear this Monday before a court in Seattle.

Reza Dindar, 44, was extradited on April 17 after being detained in Panama since July 2025 on charges related to export control violations between 2011 and 2012, allegedly carried out through companies based in China.

The defendant appeared before a U.S. district court in Seattle, where he faces charges of violating sanctions imposed by the United States on Iran in 1995 during the administration of Bill Clinton. These sanctions prohibit the unauthorized export, re-export, or supply—directly or indirectly—of U.S. goods, technology, or services to Iran or its government.

According to the indictment, between 2010 and 2014, Dindar led the company New Port Sourcing Solutions in Xi’an, China, which allegedly concealed the procurement of U.S. products for shipment to clients in Iran.

International

Elon Musk skips French court appearance over X investigation

Billionaire Elon Musk did not appear this Monday before French authorities, who had summoned him for a voluntary statement as part of an investigation into his social media platform X, prosecutors told AFP.

The platform has been under investigation since early 2025 following complaints from lawmakers alleging bias in its algorithms, which may have altered its functioning and interfered in politics in France.

The probe has since expanded to include other alleged offenses, such as complicity in the distribution of child sexual abuse material, as well as the role of Grok in spreading denialist content and sexually explicit fake images.

In early February, investigators raided X’s offices in Paris. The company has denied any wrongdoing, describing the searches as “political” and “abusive.”

At that time, the Paris prosecutor’s office summoned Musk and former CEO Linda Yaccarino to provide voluntary testimony as those responsible for the platform during the period under investigation.

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Paris prosecutor Laure Beccuau also stated that X employees were called to testify as witnesses between April 20 and April 24.

International

Four injured in shooting at Teotihuacán archaeological site in Mexico

Four more people were injured by gunfire during the ആക്രമ attack at Teotihuacán, one of the most emblematic archaeological complexes in Mexico, authorities confirmed.

The Secretary of Security of the State of Mexico, Cristóbal Castañeda, reported that the victims include two Colombian nationals, one Russian, and one Canadian. Additionally, two other individuals were injured due to falls, according to a statement from local authorities.

President Claudia Sheinbaum expressed concern over the incident, stating on social media that “what happened today in Teotihuacán deeply pains us.”

Federal authorities recovered a firearm, a knife, and ammunition at the scene, which remains under the protection of state police and the Guardia Nacional, according to the federal Security Cabinet.

Located about 50 kilometers from Mexico City, Teotihuacán is a major tourist destination frequently visited by both domestic and international travelers.