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.
“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.
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.
“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.
“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.
International
At least 10 dead and 20 injured in highway crash near Morelia
The accident occurred on the highway connecting Morelia, the capital of Michoacán, with the town of Pátzcuaro, the Morelia police reported in a statement.
“Preliminary information indicates there are around 10 fatalities and nearly 20 people injured. Emergency teams are carrying out extraction efforts and providing medical assistance at the scene,” the department said. It added that traffic on the roadway remains closed while rescue crews continue their work.
So far, authorities have not specified the cause of the crash.
Road accidents are common in Mexico, often caused by excessive speed or poor vehicle maintenance, particularly involving buses or cargo trucks.
In September, a truck carrying nearly 50,000 liters of gas exploded at an intersection in Mexico City, resulting in 32 deaths.
International
Democrats press prince Andrew for testimony as Epstein probe intensifies
Sixteen Democratic lawmakers have signed a letter urging Prince Andrew to participate in a “transcribed interview” with the U.S. House Oversight Committee, which is investigating the Epstein case. Epstein died by suicide in 2019 while jailed and awaiting trial on sex-trafficking charges.
The letter asked Andrew — the younger brother of King Charles III and now referred to as Andrew Mountbatten-Windsor after being stripped of his royal titles due to his association with Epstein — to respond by November 20.
“Andrew Mountbatten-Windsor’s silence in response to the Oversight Committee Democrats’ request for testimony speaks volumes,” said Representatives Robert Garcia and Suhas Subramanyan, both members of the committee, in a statement released on Friday.
“The documents we have reviewed, along with public records and the testimony of Virginia Roberts Giuffre, raise serious questions he must answer, yet he continues to hide.”
Giuffre, a U.S.-Australian citizen who died by suicide in April, wrote in posthumous memoirs that she had been forced into sexual encounters with Andrew on three occasions — the first two when she was 17.
International
President Sheinbaum Hails Fátima Bosch’s Miss Universe Win as a Victory for Women’s Voices
Mexican President Claudia Sheinbaum praised Fátima Bosch on Friday for winning the Miss Universe 2025 title, recognizing her as a symbol of courage for Mexican women and highlighting her stance against an act of injustice during the international pageant.
Bosch, a native of Tabasco, claimed the crown at the competition held in Thailand. Her participation drew significant attention following an incident involving the director of Miss Universe Thailand, Nawat Itsaragrisil, who told her to remain silent for not sharing event-related content on her social media platforms. The remark prompted Bosch to walk out of the room in protest, an action supported by several other contestants.
President Sheinbaum denounced expressions like “you look prettier when you’re quiet,” asserting: “Women look more beautiful when we speak up and participate. And she raised her voice, saying, ‘This is unjust, I don’t agree.’”
Fátima Bosch, 25, became the fourth Mexican woman to win the Miss Universe crown, joining Lupita Jones (1991), Ximena Navarrete (2010), and Andrea Meza (2020).
Bosch triumphed over Thailand’s Veena Praveenar, who placed as first runner-up, and Venezuela’s Stephany Abasaly, who took third place. This year’s pageant featured contestants from 120 countries and territories, including nine mothers, one transgender woman, a genocide survivor, and the first-ever Palestinian contestant in the competition’s history.
At least 10 dead and 20 injured in highway crash near Morelia
Democrats press prince Andrew for testimony as Epstein probe intensifies
President Sheinbaum Hails Fátima Bosch’s Miss Universe Win as a Victory for Women’s Voices
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