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
Rubio rules out 2028 presidential bid if Vance runs
U.S. Secretary of State Marco Rubio said he would not seek the presidency in 2028 if current Vice President JD Vancedecides to run as the Republican nominee to succeed President Donald Trump.
“If JD Vance runs for president, he will be our candidate, and I will be one of the first people to support him,” Rubio said in an interview with Vanity Fair, in which he appeared alongside other senior members of the presidential cabinet.
Rubio, 54, and Vance, 41, are widely viewed as two of the leading Republican figures who could headline the party’s ticket in the 2028 election. Under the U.S. Constitution, Trump is barred from seeking another term after completing two presidential mandates.
In a lighthearted moment during the interview, Vance jokingly offered photographers $1,000 if they managed to make him look better than Rubio in the photos. Both leaders have received public backing from Trump, who last October floated the idea of a joint ticket featuring Rubio and Vance, without clarifying who would lead it.
“I think that if they ever teamed up, they would be unstoppable. I don’t think anyone would run against us,” Trump said at the time.
White House Chief of Staff Susie Wiles, who also took part in the interview, confirmed that Trump does not intend to violate the 22nd Amendment, which prohibits a third presidential term, though she acknowledged that the president is “having fun” with speculation about a possible return to office.
Rubio, the son of Cuban immigrants, served as a Republican senator from 2010 to 2025. He sought the party’s presidential nomination in 2016 but was defeated by Trump after a bruising primary contest. His name was floated as a potential vice presidential pick in 2024, but Vance ultimately secured the spot. After taking office, Trump appointed Rubio as secretary of state, making him the first Latino to hold the position.
International
Authorities search for armed and dangerous suspect in fatal Brown University attack
According to the statement, investigators are “seeking the public’s help to identify and speak with an individual” who was seen “near” the suspect at the time of the attack.
The Providence Police Department in Rhode Island released three photos of the person of interest, whose face has been blurred. In the images, the individual is wearing navy blue clothing, what appears to be a green hood, and carrying a light-colored backpack.
Earlier, authorities had released several photos and videos of a suspect described as “approximately 5 feet 8 inches tall, with a stocky build,” dressed in dark clothing, with their face covered by a surgical mask and wearing a beanie. The suspect’s identity remains unknown.
Authorities are offering a $50,000 reward for any information leading to the identification, arrest, and conviction of the person responsible for the killings, who is considered armed and dangerous.
The gunman opened fire on Saturday at Brown University’s engineering and physics building, where exams were being held, killing students Ella Cook and Mukhammad Aziz Umurzokov. The names of the nine people injured have not been released.
International
Police investigate deaths of Rob Reiner and wife as apparent homicide
The Los Angeles Police Department (LAPD) is investigating the deaths of Hollywood actor and filmmaker Rob Reinerand his wife as an “apparent homicide,” amid a wave of tributes to the director of classics such as When Harry Met Sally.
According to U.S. media reports on Sunday, Rob Reiner and Michele Singer Reiner were found dead at their Los Angeles mansion with what appeared to be stab wounds.
Several political figures shared messages of condolence following the reported deaths of the director of A Few Good Menand his wife.
While the LAPD did not officially confirm the identities of the victims, it stated that homicide detectives were dispatched to the Reiner residence.
“At this time, no additional details are available and the investigation into an apparent homicide is ongoing,” the Los Angeles Police Department said in a statement posted on social media.
LAPD Deputy Chief Alan Hamilton told reporters that no arrests have been made and that no individuals are currently being questioned as suspects.
“I’m not going to confirm whether anyone is being questioned at this moment or not. We are going to try to speak with as many family members as we can,” Hamilton said.
CNN reported that a family spokesperson confirmed the deaths of Reiner and his wife.
California Governor Gavin Newsom, former U.S. President Barack Obama, and former Vice President Kamala Harrisissued statements expressing their condolences.
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