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.
Central America
Mexico and Guatemala launch joint security operation after Agua Zarca border attack
The Government of Mexico announced on Tuesday that it has strengthened coordination with Guatemala following an armed confrontation in the community of Agua Zarca, in Guatemala’s Huehuetenango department, where a soldier was wounded in an attack attributed to organized-crime groups operating on both sides of the border.
The Secretary of Security and Citizen Protection, Omar García Harfuch, confirmed that Mexico is exchanging information with Guatemalan authorities and that Mexican Army units have been deployed along the border to reinforce surveillance and assist in reconnaissance operations.
The attack, Guatemala’s Defense Ministry stated, reflects the “criminal dynamics” dominating that border region, where different groups compete for drug and arms trafficking routes.
According to Guatemala’s Defense Ministry, the clash left a soldier wounded in the leg after suspected criminals crossed from Mexico and opened fire. The wounded soldier is reportedly in stable condition. Authorities also seized high-caliber weapons, explosives, tactical gear and drones, which were handed over for forensic analysis.
Mexican Defense Secretary General Ricardo Trevilla Trejo announced that a coordinated plan of operations will be launched involving both Mexican and Guatemalan forces along the border to counter these criminal networks.
Harfuch emphasized that the violence is not isolated but symptomatic of the ongoing struggle between criminal organizations for territorial control, and reiterated Mexico’s commitment to bilateral security cooperation and its intention to strengthen institutional presence in vulnerable border zones.
International
Zelensky meets Pope Leo XIV as review of U.S. peace plan continues
Ukrainian President Volodymyr Zelensky met on Tuesday with Pope Leo XIV in Italy, after pledging to deliver a response to the United States regarding the proposed peace plan aimed at ending the war with Russia.
The meeting with the pontiff took place at the papal residence in Castel Gandolfo, near Rome, where Leo XIV “reiterated the need to continue dialogue and renewed his urgent hope that the ongoing diplomatic initiatives may lead to a just and lasting peace,” the Vatican said in a statement.
His visit to Italy follows Monday’s meetings with European leaders in London and Brussels, amid pressure from U.S. President Donald Trump to agree to a peace plan that Zelensky said he is still reviewing.
According to Zelensky, the plan presented by Washington—originally consisting of 28 points—was reduced to 20 after discussions between Ukrainian and U.S. representatives over the weekend. “We are going to work on those 20 points. We are not completely satisfied with the proposals from our partners,” Zelensky said during an online press conference on Monday.
International
Japan lifts tsunami alert after strong 7.6-magnitude earthquake hits northern coast
A powerful 7.6-magnitude earthquake struck Japan’s northern coast on Monday, triggering several tsunami waves of up to 70 centimeters, authorities said. The tsunami alert was lifted in the early hours of Tuesday.
According to the U.S. Geological Survey (USGS), the quake occurred at 11:15 p.m. local time (14:15 GMT) off the coast of Misawa, at a depth of 53 kilometers. Japan’s Meteorological Agency (JMA) immediately issued a tsunami warning. The first wave reached a port in Aomori Prefecture at 11:43 p.m. (14:43 GMT), followed by others measuring up to 70 centimeters.
Public broadcaster NHK reported that an employee at a hotel in the city of Hachinohe confirmed that several people were injured. Live footage showed shattered glass scattered across roads, while many residents evacuated to the city hall seeking shelter.
The strong tremor was also felt in Sapporo, where emergency alerts were sent to residents’ mobile phones. A reporter in Hokkaido described a horizontal shaking that lasted around 30 seconds, making it difficult to stay standing.
Before the alert was lifted, the JMA had warned of the possibility of tsunami waves up to three meters high along Japan’s Pacific coast. Government spokesperson Minoru Kihara urged residents to remain in safe areas until the warning was officially lifted.
Mexico and Guatemala launch joint security operation after Agua Zarca border attack
Honduran University: Nullifying elections without proof of fraud undermines popular sovereignty
CNA director says Libre’s defeat stems from “lack of substance,” not messaging
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
Defense Minister commends salvadoran soldier for Central American Cross Country victory
Extension of the state of emergency approved in southern Chile
-
Central America2 days agoGuatemalan soldier wounded in clash with suspected mexican armed group near border
-
International2 days agoJapan lifts tsunami alert after strong 7.6-magnitude earthquake hits northern coast
-
International4 days agoFive laboratories investigated in Spain over possible African Swine Fever leak
-
Central America4 days agoHonduras vote vount drags on as Asfura and Nasralla remain in technical tie
-
Central America2 days agoGuatemala reverses asset seizures after judge replacement, benefiting ex-president and former ministers
-
Central America18 hours agoMexico and Guatemala launch joint security operation after Agua Zarca border attack
-
International2 days agoInterior Dept. redefines 2026 Patriotic Days, sparking criticism over removed civil rights holidays
-
Central America18 hours agoHonduran University: Nullifying elections without proof of fraud undermines popular sovereignty
-
Central America18 hours agoCNA director says Libre’s defeat stems from “lack of substance,” not messaging
-
International18 hours agoZelensky meets Pope Leo XIV as review of U.S. peace plan continues