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

Colombia to Send High-Level Delegation to Ecuador to Ease Trade Tensions

Colombia’s Ministry of Foreign Affairs confirmed on Friday that, at the instruction of President Gustavo Petro, a high-level delegation will travel to Ecuador in an effort to normalize bilateral relations, which have deteriorated following the imposition of reciprocal tariffs.

“In line with Colombia’s policy of good neighborliness and the spirit of cooperation and integration that guides its foreign policy,” the Foreign Ministry said in a statement, adding that the delegation will be led by Foreign Minister Rosa Villavicencio and Defense Minister Pedro Sánchez.

“Following instructions from the Presidency of the Republic, and as has been publicly reiterated, the Colombian delegation expects to reaffirm Colombia’s offer of support to the Republic of Ecuador to strengthen control over phenomena stemming from transnational organized crime,” the statement said.

The Foreign Ministry noted that the delegation will attend the meeting with a full willingness to engage in dialogue and to seek concrete solutions to the unilateral measures that have affected the longstanding relationship between the two neighboring countries.

Trade tensions between Ecuador and Colombia escalated on January 21, when Ecuadorian President Daniel Noboaimposed a 30% tariff on Colombian products, citing a lack of cooperation in anti-drug efforts. Colombia responded with similar measures and the suspension of energy exports, while Ecuador increased transportation costs for Colombian crude oil.

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Business associations in both countries have warned that the dispute is harming both economies and have called on the governments to resolve their differences through dialogue.

International

Super Bowl Halftime Show Puts Bad Bunny—and Immigration Politics—Back in the Spotlight

The long-standing argument that sports and politics should not mix may be put to the test on Sunday during the Super Bowl halftime show, which will be headlined by Puerto Rican superstar Bad Bunny, a choice that has sparked backlash from segments of the U.S. right wing.

Just one week after his headline-making appearance at the Grammy Awards—where he sharply criticized the United States’ anti-immigration policies—Bad Bunny will once again take center stage on the global spotlight with his performance at the NFL final in Santa Clara, California.

Beyond the expectations surrounding the show itself, speculation has grown over whether the artist could again use the platform to protest policies associated with the administration of former President Donald Trump, in front of an audience expected to exceed 120 million viewers in the United States alone.

In fact, one of the most popular Super Bowl prop bets this year revolves around whether the Puerto Rican singer will deliver a direct message against ICE (U.S. Immigration and Customs Enforcement), similar to the one he delivered at the Grammys last Sunday.

While few expect Bad Bunny to repeat such a pointed statement, the mere speculation highlights the delicate balance the NFL must manage during the most-watched broadcast of the year.

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The world’s most powerful sports league has drawn criticism from the MAGA movement since announcing in September that Bad Bunny would headline a halftime show largely performed in Spanish.

Trump himself declined to attend the matchup between the New England Patriots and the Seattle Seahawks, despite having made history last year as the first sitting U.S. president to attend a Super Bowl. He described the musical lineup—which also includes outspoken critics such as Green Day—as “a terrible choice” that would “sow hatred.” In response, his supporters have organized an alternative event dubbed the “All-American Halftime Show,” featuring like-minded artists such as Kid Rock.

International

Venezuela Debates Broad Amnesty Law Covering 27 Years of Chavismo

Venezuela’s Parliament began debating on Thursday a sweeping amnesty bill that would cover the 27 years of Chavismo in power, while explicitly excluding serious human rights violations and crimes against humanity.

The proposed legislation, titled the “Amnesty Law for Democratic Coexistence,” was introduced by interim President Delcy Rodríguez, who assumed power following the capture of Nicolás Maduro during a U.S. military operation.

The legislative session was convened for Thursday afternoon, with lawmakers holding an initial discussion focused on the general principles of the bill. This phase precedes a consultation process with civil society, after which the proposal will move to a final debate examining each article individually.

According to a draft of the bill obtained by AFP, the amnesty would apply to individuals accused of crimes such as “treason,” “terrorism,” and “incitement to hatred,” charges that were frequently brought against political prisoners over the past decades. The scope also includes offenses ranging from acts of rebellion to punishments imposed for social media posts or messages sent through private messaging services.

The bill’s explanatory text emphasizes reconciliation, stating that it seeks to move away from “vengeance, retaliation, and hatred” in favor of “opening a path toward reconciliation.”

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However, the proposal explicitly excludes from its benefits crimes such as “serious human rights violations, crimes against humanity, war crimes, intentional homicide, corruption, and drug trafficking.”

These exclusions, the text notes, are based on strict compliance with the Venezuelan Constitution, which already prohibits granting amnesties or pardons for such offenses.