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

Spain’s irregular migrant population rises to 840,000, study finds

The number of migrants living in Spain without legal residency status continues to rise and has reached 840,000 people, with 91% originating from the Americas, particularly Colombia, Peru and Honduras, according to a report by the Spanish think tank Funcas (Foundation of the Savings Banks).

An estimated 17.2% of the non-EU foreign population living in Spain is in an irregular administrative situation. The estimate is based on the gap between the number of foreign residents effectively living in Spain, according to the National Statistics Institute (INE), and those who hold a residence permit, benefit from international protection, or are in the process of obtaining it.

The data, as of January 1, 2025, point to a notable and sustained increase in irregular migration since 2017, when the estimated figure stood at around 107,000 people, representing 4.2% of the non-EU population residing in Spain.

By origin, migrants from the American continent stand out, totaling around 760,000 people, or 91% of all irregular migrants. Colombians account for nearly 290,000, followed by Peruvians with almost 110,000, and Hondurans with about 90,000. Migrants from Africa (50,000), Asia (15,000) and Europe (14,000) trail far behind.

The figures predate Spain’s latest immigration regulation reform, which came into force in May 2025 and introduces measures to ease access to legal status through residency ties. According to Funcas, the reform would, in principle, tend to reduce the number of migrants in an irregular situation.

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International

Historic snowstorm paralyzes Toronto after 60 centimeters of snow

Toronto, Canada’s largest city and the fourth most populous in North America, was largely paralyzed on Monday after a historic snowstorm dumped up to 60 centimeters of snow and sent temperatures plunging to -15 degrees Celsius, authorities said.

Late Sunday, as the scale of the snowfall became clear, city officials declared a climate emergency, triggering extraordinary measures including parking bans on several major streets to facilitate snow removal operations.

Toronto’s public transit authority reported that while some buses remain immobilized, subway and streetcar services are operating with relative normality, though localized disruptions may occur.

A similar situation is affecting the city’s commuter rail network, which remains operational but is experiencing significant delays on its main routes due to the severe weather conditions.

International

Venezuela frees at least 80 political prisoners, NGO says

At least 80 political prisoners were released on Sunday across Venezuela, human rights group Foro Penal reported, as the broader process of detainee releases continues at a slow pace under the interim government.

Foro Penal’s director, Alfredo Romero, wrote on social media platform X that verified releases took place nationwide and that the figure could rise as more confirmations are completed.

Attorney Gonzalo Himiob, also from Foro Penal, said the excarcelations occurred during the early hours of the day and emphasized that the number is not yet final pending further verification.

The releases are part of a series of steps announced by Venezuela’s interim leader, Delcy Rodríguez, who took power after the capture of former President Nicolás Maduro in a U.S. military operation on Jan. 3, 2026. Rodríguez has pledged a significant number of liberations but has been criticized by opposition groups and rights organizations for the slow and nontransparent nature of the process.

So far, the Venezuelan government reports that 626 detainees have been freed since December, though independent counts by human rights groups suggest the number of actual political prisoner releases is lower and that many remain behind bars.

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Families of those still detained have maintained vigils outside prisons, hopeful for further releases even as broader concerns about political imprisonment and due process persist.