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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International

Maradona’s daughter accuses medical team of “horrible manipulation” in court

One of the daughters of Diego Maradona testified in court this Tuesday, breaking down in tears as she denounced what she described as “absolute and horrible manipulation” by her father’s medical team, during an emotional hearing in Argentina.

Gianinna Maradona stated that she and her siblings agreed to home hospitalization after doctors presented it as the best option following the neurosurgery Maradona underwent on November 3, 2020.

The football icon died on November 25 of that year, and the ongoing trial seeks to determine whether the conditions of his home care were appropriate.

According to Gianinna, what the family found at the residence where Maradona was recovering did not match what had been promised. She testified that there was no adequate medical equipment, constant monitoring, or even an ambulance available, despite assurances of continuous care.

“The manipulation was absolute and horrible,” she said during the hearing in San Isidro, near Buenos Aires.

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She accused members of the medical team, including neurosurgeon Leopoldo Luque, psychiatrist Agustina Cosachov, and psychologist Carlos Díaz, of misleading the family.

“I trusted these people, and all they did was manipulate us and leave my son without a grandfather,” she added.

Later in her testimony, recalling that six years have passed since her father’s death, she became emotional and said she struggled deeply with grief in the aftermath.

International

Trump extends Iran ceasefire after Pakistan mediation request

The president of the United States, Donald Trump, announced on Tuesday that he will extend the ceasefire with Iran, which was set to expire on Wednesday, following a request from Pakistan.

In a statement shared on Truth Social, Trump said the truce will remain in place until Iran presents a proposal and negotiations are concluded, regardless of the outcome.

“I will extend the ceasefire until their proposal is presented and negotiations are completed, whatever the result,” the U.S. leader stated.

Trump justified the decision by claiming that Iran’s government is “deeply divided” and noting that Pakistani authorities, acting as mediators, requested a pause in military action until Iranian leaders and representatives submit a unified proposal.

International

Venezuelan opposition demands election date and minimum wage increase

A group of opposition members from the Zulia Humana and former political prisoners on Tuesday demanded that authorities set a date for elections in Venezuela and increase the minimum wage, which has been frozen since 2022 and is currently worth just a few cents per month according to the Banco Central de Venezuela.

During a press conference in Maracaibo, Professor Eduardo Labrador stressed the urgency of establishing an electoral timeline. “We demand that a date be set for elections so Venezuelans can have free and transparent voting. It is essential to have that date now,” he said.

Economist Rodrigo Cabezas, who served under the late President Hugo Chávez, also called for an increase in the minimum wage, arguing that it is feasible through economic policy measures, although he did not specify an amount due to limited public data.

Cabezas warned that Venezuela experienced “galloping inflation” between March of last year and March 2026, a stage that precedes hyperinflation—a phenomenon the country has already faced. However, he clarified that Venezuela is not currently in hyperinflation, expressing hope that it will not return.