International
Chile’s distant paradise where scientists study climate change
AFP | Alberto Peña
Hidden inside pristine forests in Chile’s deep south, known as the end of the world, lie potential early warning signs of climate change. Puerto Williams on Navarino island, which is separated from the South American mainland by the Beagle Channel, is the world’s southern-most town.
Far from the pollution that blights major urban and industrial centers, it is a paradise that provides unique conditions to study global warming.
“There is nowhere else like it,” Ricardo Rozzi, director of the Cape Horn International Center for global change studies and bio-cultural conservation in Puerto Williams, told AFP.
It is “a place that is especially sensitive to climate change” as average temperatures do not rise above five degrees Celsius. This cold and windy area is the last inhabited southern frontier before reaching the Antarctic.
The ethnobotanical Omora park is home to an immense variety of lichens, mosses and fungi that scientists study by crouching down onto their knees with magnifying glasses.
In the crystal clear Robalo river, minuscule organisms act as sentinels of the changes produced by global warming. In both the park and river, the alarm bells are ringing.
Moss and lichen on the move
At this latitude — 55 degrees south — climate change has an exponential effect on flora that react by seeking out low temperatures, said Rozzi, 61. “The most obvious aspect of climate change is the rising temperatures,” he said. “These lichens cannot survive” if a certain threshold is passed. To escape the higher temperatures, they move.
“In the case of (mosses) we’ve noticed that they have moved. Before they were between 50 and 350 (meters above sea level) and now they are between 100 and 400,” said Rozzi. He says Omora has more diversity per square meter of lichens and mosses than anywhere else in the world. They also help to absorb carbon dioxide.
Another aspect is the elevational diversity gradient, an ecological pattern in which biodiversity changes with elevation.
The 700-meter high Bandera hill’s biodiversity changes every 200 meters and there is a mammoth 1.5 degrees Celsius difference in temperature between top and bottom.
“We can see what changes happen in the high mountains and in the area close to the sea in a very short distance, and we can see how the temperature affects the biodiversity that lives in this river,” Tamara Contador, 38, a biologist at the Cape Horn International Center, told AFP.
She studies the gradients themselves. If the height difference between gradients rises or falls on the mountain, scientists can determine whether there has been a global change in temperature. They say there has been.
Avoiding ‘extermination’
“On a global level, the polar and subpolar ecosystems are the most affected by climate change, so we are in a place where climate change has a much bigger effect on biodiversity than other places,” said Contador.
River organisms also form part of the alert system.
“The organisms that live here are also indicators of water quality and global environmental change,” added Contador.
River organisms move about and have already increased their reproductive cycle, says Rozzi. This confirms there has been a small change to the climate in the area that could have been much greater elsewhere on the planet.
“Some insects that have an annual eggs to larvae to adulthood cycle are now having two cycles because the temperature has risen,” said Rozzi.
By studying these organisms and learning from them “we can avoid crossing the threshold that brings us to the extermination of humanity and other life forms,” he added.
Central America
U.S. Authorities Accuse Guatemalan Nationals of Using False Information to Sponsor Migrant Minors
Senior officials from the U.S. Department of Justice and the Department of Homeland Security announced Thursday criminal charges against three Guatemalan citizens accused of using false information to sponsor migrant children who crossed the U.S.-Mexico border without a parent or guardian.
According to an indictment filed in Ohio, Maritza Cahuec Coc allegedly submitted at least 12 sponsorship applications, several of which were filed under aliases or contained materially false statements intended to secure custody of the minors.
Under U.S. procedures, unaccompanied migrant children apprehended at the southern border are placed in the custody of the Department of Health and Human Services, which is responsible for their care until they can be released to a qualified sponsor, such as a parent or relative living in the United States.
Prosecutors allege that Cahuec Coc, who reportedly entered the United States illegally in 2018, received payments between late 2020 and 2023 for helping bring 12 migrant minors into the country. Authorities claim she submitted fraudulent documents and misleading information to obtain approval for the sponsorship requests.
The case was announced during a joint press conference led by Acting Deputy Attorney General Todd Blanche and Homeland Security Secretary Markwayne Mullin. However, officials provided limited details about the investigation and instead focused much of their remarks on criticizing immigration policies implemented under the previous administration.
Republican lawmakers and Trump administration officials have frequently pointed to the increase in unaccompanied migrant children arriving at the U.S.-Mexico border during President Joe Biden’s term, arguing that the government failed to adequately oversee their care and placement.
During Thursday’s briefing, A. Tysen Duva, Assistant Attorney General for the Justice Department’s Criminal Division, alleged that Cahuec Coc used the identities of other individuals and falsely claimed family relationships in order to obtain custody of the children.
“Maritza submitted sponsorship applications using other people’s identities and falsely represented that the minors were the children of close relatives in order to secure their release,” Duva said.
The case remains under investigation, and federal authorities have not yet disclosed additional information regarding the other two Guatemalan nationals charged in connection with the alleged scheme.
International
Iván Cepeda Open to Revising Colombia’s Peace Policy Ahead of Runoff Election
Colombian presidential candidate Iván Cepeda said Thursday that he is willing to introduce “necessary changes” to the peace policy implemented by President Gustavo Petro, a strategy he helped design and promote during the current administration.
The future of Petro’s controversial “Total Peace” initiative has become one of the central issues in Colombia’s presidential runoff election, scheduled for June 21, where Cepeda will face right-wing candidate Abelardo de la Espriella.
De la Espriella, who narrowly won the first round of voting on May 31, has campaigned on a platform of tougher security measures and a stronger crackdown on drug trafficking and armed criminal groups.
Speaking to AFP in Bogotá, Cepeda acknowledged that adjustments to the peace strategy may be required after Petro’s efforts to negotiate with armed organizations failed to produce the expected results amid a surge in violence across the country.
“We are going to make the necessary changes, of course. We will conduct an assessment,” the 63-year-old senator said during the interview, held ten days before the decisive runoff vote.
Cepeda, a philosopher and longtime human rights advocate, explained that any modifications to the policy would emerge from a broad national dialogue involving political leaders, social organizations and other sectors of Colombian society. However, he did not provide specific details about the proposed changes.
President Gustavo Petro’s “Total Peace” initiative sought to negotiate agreements with guerrilla movements, paramilitary groups and major criminal organizations, including the powerful Clan del Golfo cartel and the National Liberation Army (ELN).
The policy aimed to reduce violence through dialogue and negotiated settlements, but critics argue that it failed to significantly weaken armed groups or improve security conditions in several regions of the country.
As the runoff campaign enters its final stage, the future direction of Colombia’s security and peace policies remains one of the most closely watched issues in the election.
International
U.S. Halts Military Action Against Iran Amid Diplomatic Breakthrough
U.S. President Donald Trump announced Thursday the suspension of military strikes that had been scheduled against Iran later that evening, citing significant progress in negotiations aimed at ending the conflict that erupted in late February.
In a message posted on social media, Trump said the decision followed high-level discussions with Iranian representatives, which he claimed led to broad agreements on the key elements of a future peace deal.
According to the president, the “final points” of the proposed agreement have been approved in principle and outlined by the parties involved. Trump identified the United States, Israel, Saudi Arabia, the United Arab Emirates, Qatar, Turkey, Pakistan, Bahrain, Kuwait, Jordan and Egypt as participants in the diplomatic process.
The U.S. leader also stated that the naval blockade imposed on Iran will remain in place while negotiations continue. He added that the date and location for the formal signing of the agreement will be announced in the coming days. No specific details regarding the content of the deal have been released so far.
The announcement marks a significant shift from comments made by Trump just hours earlier, when he warned of additional military strikes against Iranian territory and reiterated threats involving key oil infrastructure within the Islamic Republic.
The decision comes amid a renewed escalation of tensions between Washington and Tehran. In recent days, both sides have exchanged military attacks while diplomatic efforts intensified to prevent a broader conflict in the Middle East.
Iran’s Revolutionary Guard recently claimed responsibility for drone attacks targeting U.S. military facilities in several countries across the region. Iranian officials described the operations as retaliation for American strikes against Iranian targets.
Although Trump’s announcement has been viewed as a sign of de-escalation, questions remain regarding the viability of the proposed agreement and the long-term stability of the negotiations. International analysts warn that the situation remains fragile and that any new incident could quickly reignite hostilities between the two countries.
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