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

German president says trust in U.S. leadership is ‘lost’ amid global tensions

German President Frank-Walter Steinmeier said on Tuesday that trust between the United States and its Western allies has been “lost,” warning that the damage could persist beyond the presidency of Donald Trump.

“The rupture is very deep, and the loss of trust in U.S. great power policy is significant—not only among its allies, but also, as I observe, globally,” Steinmeier said during a speech in Berlin marking the 75th anniversary of Germany’s Foreign Ministry.

Referring to the future of transatlantic relations, he stated that “there is no return to the situation before January 20, 2025,” the date marking the start of Trump’s second term in the White House.

“Even a future U.S. administration will no longer be able to resume the role of a benevolent hegemon guaranteeing a liberal international order,” added Steinmeier, who previously served as Germany’s foreign minister.

He also criticized the war against Iran, describing it as “contrary to international law” and calling it “a political mistake with serious consequences.”

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“This war is avoidable and unnecessary,” he said.

Although the German presidency is largely ceremonial, Steinmeier’s remarks reflect a broader concern within Germany, aligning with the government’s cautious stance while going further in tone.

International

Trump claims talks with Iran as G7 meets to address global tensions

U.S. President Donald Trump said that the United States has held talks with Iran—a claim denied by Tehran—and has temporarily paused his threat to target the country’s electrical infrastructure.

In his first overseas trip since the United States and Israel launched their offensive on February 28, U.S. Secretary of State Marco Rubio is expected to address key global issues, including the situation in the Middle East, according to State Department spokesperson Tommy Pigott.

Foreign ministers from the Group of Seven will meet in Cernay-la-Ville, close to Versailles, on the outskirts of Paris.

During the meeting, Rubio will hold discussions with his counterparts on “the war between Russia and Ukraine, the situation in the Middle East, and threats to global peace and stability,” Pigott said.

France currently holds the presidency of the G7, whose members also include the United Kingdom, Canada, Germany, Italy, and Japan.

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Although all G7 nations are close allies of the United States, none has offered explicit support for Washington’s military actions against Iran, a stance that has reportedly frustrated Trump.

Last Saturday, G7 foreign ministers called for an “immediate and unconditional end” to Iranian attacks against U.S. allies in the Middle East.

International

Pentagon to deploy 3,000 troops to Persian Gulf as Middle East tensions escalate

The Pentagon is planning to deploy nearly 3,000 troops from the 82nd Airborne Division to the Persian Gulf, according to two senior officials cited Tuesday by Spanish newspaper El País.

Meanwhile, Hezbollah warned it would confront any attempt at occupation following Israel’s announcement that its military will take control of southern Lebanon up to the Litani River, located about 30 kilometers from the border.

In recent hours, the Israel Defense Forces carried out airstrikes on Beirut, while Iran and Hezbollah responded with attacks on Israel, leaving at least six people with minor injuries in Tel Aviv.

The escalation comes as global markets react to renewed instability. The price of oil rose again above $100 per barrel after a brief decline the previous day, following an announcement by U.S. President Donald Trump of a five-day truce on attacks targeting Iran’s energy infrastructure.

Despite the announcement, Iranian authorities reported that two projectiles struck a gas pipeline in Khorramshahr and administrative buildings at a gas facility in Isfahan early Tuesday.