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 Eight Dead and 19 Injured in Deadly Bus Crash in Veracruz, Mexico
A tragic bus accident in the eastern state of Veracruz left at least eight people dead and 19 others injured on Wednesday afternoon, according to local authorities.
The vehicle was traveling through the town of Zontecomatlán when it crashed near a ravine, state Civil Protection officials reported late Wednesday night. “Regrettably, the prosecutor’s office has confirmed eight fatalities,” the agency stated in an official release.
Emergency Response and Medical Care Rescue teams worked into the night to assist the survivors. The 19 injured passengers were stabilized at the scene before being transported to hospitals in the nearby municipalities of Chicontepec and Huayacocotla. While the identities of the victims have not yet been released, Mexican press reports indicate the bus was en route from Mexico City to Chicontepec.
A Recurring Issue on Mexican Highways Road accidents involving long-haul passenger buses and freight transport are a frequent occurrence in Mexico. Experts often cite excessive speed, mechanical failure, or driver fatigue as the primary catalysts for these tragedies.
This latest incident follows another major disaster in late November, where 10 people were killed and 20 injured in a similar bus crash in the western state of Michoacán. The recurring nature of these accidents continues to spark national debate regarding the enforcement of stricter safety regulations for commercial transport units.
International
Jair Bolsonaro Hospitalized for Inguinal Hernia Surgery While Serving Sentence for Attempted Coup
Former Brazilian President Jair Bolsonaro, currently serving a 27-year prison sentence for an attempted coup, underwent surgery this Thursday for an inguinal hernia. The procedure took place at the DF Star Hospital in Brasilia, according to his wife, Michelle Bolsonaro.
The 70-year-old former leader left prison on Wednesday for the first time since his incarceration in late November to prepare for the operation. “My love has just gone to the surgical center,” Michelle Bolsonaro posted on Instagram, where she has been documenting her accompaniment during his hospitalization.
Surgical Expectations and Health History Medical professionals treating the far-right ex-president (2019-2022) anticipate the operation will last approximately four hours. His recovery period in the hospital is expected to extend between five and seven days.
Dr. Claudio Birolini explained on Wednesday that while the surgery is standardized, it remains complex due to the patient’s history. Bolsonaro continues to suffer from the long-term effects of a 2018 campaign rally stabbing, an injury that required several major abdominal surgeries in the years following the attack.
“There is no such thing as a simple surgery. However, this is a scheduled and standardized procedure, so we expect it to be carried out without major complications,” Dr. Birolini stated.
Potential Additional Procedures Following the hernia repair, the medical team will evaluate whether Bolsonaro can undergo a second procedure: an anesthetic block of the phrenic nerve. This nerve controls the diaphragm, and the intervention would aim to resolve a chronic case of recurrent hiccups that has plagued the former president for years.
Bolsonaro remains under heavy security at the medical facility as he serves his lengthy sentence related to the events surrounding the January 2023 institutional crisis in Brazil.
International
Trump Orders Construction of New ‘Golden Fleet’ to Revitalize U.S. Naval Superiority
President Donald Trump issued an executive order this Monday for the immediate construction of two new warships that will bear his name. These vessels will be the pioneers of what he described as the “Golden Fleet,” a future generation of “Trump-class” battleships that he claimed would be “100 times more powerful” than those currently in service.
The announcement took place at his private residence in Mar-a-Lago, Florida. The President indicated that following the initial two ships, the administration aims to commission up to 25 additional vessels. He is scheduled to meet with Florida-based contractors next week to expedite production, criticizing existing defense firms for failing to deliver results efficiently.
This naval expansion is a cornerstone of Trump’s goal to revitalized the American shipbuilding industry and address the strategic gap between the U.S. and competitors like China.
The move comes amid heightened geopolitical tension. Just last week, Trump ordered the seizure of all sanctioned tankers involved with Venezuela’s “ghost fleet” to cripple the country’s crude oil industry. Since December 10, the U.S. military—deployed in the Caribbean under the guise of counter-narcotics operations—has already detained two tankers linked to Venezuelan oil transport.
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Extension of the state of emergency approved in southern Chile
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