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

Dominican court postpones hearing in deadly nightclub collapse case

10 reported dead after explosion in Dominican Republic

A Dominican court on Monday postponed until March a preliminary hearing against the owners of a nightclub that collapsed last year, killing more than 200 people.

The roof of the Jet Set nightclub collapsed in the early hours of April 8, 2025, during a concert by popular merengue singer Rubby Pérez, who died along with 235 other people.

Jet Set owner and manager Antonio Espaillat and his sister Maribel, who served as the club’s administrator, were arrested on charges of involuntary manslaughter but were later released on bail after posting approximately $842,500.

Both appeared at the Palace of Justice, where they were met by a small protest from relatives and friends of the victims.

“Thirty years in prison is not enough” and “President, we want JUSTICE,” read signs held by demonstrators.

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The preliminary hearing determines whether there is sufficient evidence to send the case to trial. The court decided to reschedule the hearing for March 16.

“We don’t want money and we’re not demanding anything else, only justice for those who died,” said Secundino Pérez, a 75-year-old shopkeeper who lost 12 friends in the Jet Set tragedy.

“Antonio and his family celebrated Christmas sitting at a table, celebrating their freedom,” said Edgar Gómez, who lost his daughter in the collapse.

The Dominican Republic’s Public Prosecutor’s Office maintains that the defendants “significantly altered” the structure of the nightclub. Prosecutors filed formal charges in November and requested that the case proceed to trial.

The charge of involuntary manslaughter carries a sentence of three months to two years in prison.

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“May your conscience never let you sleep. I lost my son,” a woman shouted through tears before the hearing, while others chanted, “Murderers, murderers, murderers.”

International

Venezuelan opposition leader dedicates Nobel Prize to Trump

U.S. President Donald Trump said last week that he was “eager” to welcome the opposition leader, who left Venezuela clandestinely with U.S. assistance, to receive her Nobel Prize in Oslo.

Machado dedicated her Nobel Prize to Trump, who nevertheless showed a very cautious attitude toward including her in any potential political transition in Venezuela.

The opposition leader said on Monday, after an audience with Pope Leo XIV, that “the defeat of evil is closer” in Venezuela following the U.S. military operation that overthrew and removed President Nicolás Maduro and his wife from the country.

Trump has claimed that he is now in control of the South American nation, stating that the primary objective at this stage is to stabilize the country before considering elections.

Venezuelan oil is Washington’s main objective, Trump added after Maduro’s overthrow.

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International

Police hunt gunmen after fatal shooting in Corsica

A man was shot dead on the French Mediterranean island of Corsica, local media reported. The victim was identified as Alain Orsoni, former president of local football club AC Ajaccio, according to sources close to the investigation cited by French news channel BFMTV.

Orsoni, 71, was killed in the town of Vero, near Ajaccio, the island’s capital, while attending his mother’s funeral.

He was also a former member of the National Liberation Front of Corsica (FLNC), a nationalist organization that has long sought independence for the island, reports said.

BFMTV reported that the gunmen fled the scene and remain at large. Local police have opened an investigation into the shooting.