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

Peruvian presidential candidate Napoleón Becerra dies in campaign road accident

Presidential candidate Napoleón Becerra, representing the Partido de los Trabajadores y Emprendedores (PTE) in Peru, died in a traffic accident while traveling to a campaign event, local authorities confirmed Sunday.

Becerra, who also served as president of the centrist political party, ranked among the lowest in opinion polls in a crowded field of more than 30 candidates competing in the presidential election scheduled for April 12.

Recent surveys place Rafael López Aliaga at the top of voter preferences.

The accident occurred near the town of Ayacucho, in southern Peru, when the vehicle carrying the candidate overturned for reasons that remain under investigation.

“The candidate Becerra has died,” Balvin Huamani, mayor of the district of Pilpichaca, told RPP radio.

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According to Huamani, he personally transported the 61-year-old candidate to a local health center, where doctors confirmed his death.

The Jurado Nacional de Elecciones (JNE) expressed condolences over Becerra’s passing and wished a speedy recovery to the three people who were traveling with him and were injured in the crash.

International

Noboa intensifies anti-cartel crackdown as violence persists in Ecuador

A close ally of Washington, Ecuadorian President Daniel Noboa has pursued a hardline security strategy against cocaine cartels for more than two years, yet homicide, disappearance and extortion rates remain high across the country.

Between Sunday night and the morning of March 31, Ecuador’s armed forces will launch a “very strong offensive” with “advisory support” from the United States, Interior Minister John Reimberg announced Tuesday.

The government has kept details of the operation confidential and has not confirmed whether U.S. troops will be deployed on Ecuadorian soil, as has occurred at times during Noboa’s administration.

As part of the security measures, residents in the coastal provinces of Guayas, Los Ríos, Santo Domingo de los Tsáchilas, and El Oro will be subject to a nightly curfew from 11:00 p.m. to 5:00 a.m. local time for the next two weeks.

“We are in a war,” Reimberg said, urging citizens to remain indoors. “Do not take risks. Stay home and allow the security forces and our allies to do the work that must be done.”

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Although Ecuador does not produce cocaine, it has become a major departure point for drugs heading to the United States. Meanwhile, the violence associated with trafficking has increasingly affected the local population.

Bordering the world’s largest cocaine producers, Colombia and Peru, Ecuador has gone from being considered a relatively peaceful country to recording one of the highest homicide rates in Latin America—52 killings per 100,000 inhabitants—according to the **Observatory of Organized Crime.

International

Peruvian presidential candidate proposes death penalty amid crime surge

Peru is facing an unprecedented surge in crime ahead of its presidential election scheduled for April 12, with violence fueled by extortion networks and a wave of contract killings linked to organized crime.

Police data show that 2,200 homicides tied to organized crime were recorded in 2025, while extortion complaints increased by 19%, underscoring the growing security crisis in the South American nation.

Amid this backdrop, presidential candidate Álvarez has proposed reinstating the death penalty if elected, arguing that extreme measures are needed to curb the violence.

To implement the proposal, Álvarez said Peru would withdraw from the American Convention on Human Rights—also known as the Pact of San José—which the country signed in 1978. The agreement prevents member states that have abolished capital punishment from reinstating it.

Currently, Peruvian law only allows the death penalty in cases of treason during wartime.

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“We have to leave the Pact of San José and apply the death penalty in Peru because those miserable criminals don’t deserve to live,” Álvarez told AFP during a campaign stop at a market in Callao, the port city neighboring Lima.

“An iron fist against those criminals,” he added, proposing to declare hitmen as military targets.

During the campaign event, Álvarez walked through stalls selling vegetables, groceries, and fish, greeting vendors while musicians played cumbia music nearby.

The 62-year-old candidate, who spent more than four decades working in television as a comedian, is a newcomer to politics and is running for president under the País para Todos party.

Polls place him fifth in voter preference with nearly 4% support in a fragmented race featuring 36 candidates.