International

Chile’s distant paradise where scientists study climate change

Photo: Alberto Peña / AFP

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.

20260330_renta_mh_728x90

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.

20260330_renta_mh_728x90

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.

20260330_renta_mh_728x90

“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.

20260330_renta_mh_728x90

A glacier over Darwin's mountain range is seen during a journey through the Beagle Channel in the Magallanes region, the southernmost of Chile, on September 23, 2022. - There is a place at the end of the world, in the southernmost point of Chile, where pristine forests hide tiny systems in their depths that already give early warning of the global climate change that the planet is suffering. Beyond the place where the American continent ends, on Navarino Island, crossing the Beagle Channel, Puerto Williams stands as the southernmost city in the world, a place far from pollution and human mistreatment, with unique conditions for the study of climate change. (Photo by Alberto PEÑA / AFP)

International

UK braces for potential CO₂ shortage amid Middle East tensions

The government of United Kingdom is preparing contingency measures amid fears of a potential shortage of carbon dioxide (CO₂), which could impact the agri-food industry if the Strait of Hormuz remains blocked due to the ongoing conflict in the Middle East, The Times reported on Thursday.

According to the newspaper, officials assessed this scenario during a recent crisis meeting aimed at evaluating the consequences of a prolonged conflict, triggered on February 28 by joint attacks from United States and Israel against Iran.

Under this scenario, CO₂ supplies—primarily a byproduct of fertilizer production using natural gas—could fall by up to 18%, affecting multiple sectors including agriculture and food production.

The gas is widely used in the slaughter of pigs and poultry, as well as in extending the shelf life of packaged foods. Breweries could also face disruptions due to reduced availability.

“I don’t want to comment on a leak, but now that the information is out there, I hope people feel reassured knowing we are working on it,” said Peter Kyle, Secretary of State for Business and Trade, in remarks to Sky News.

20260330_renta_mh_728x90

While a drop in CO₂ supply is not expected to cause major shortages in supermarkets, it could limit product variety, The Times noted, citing access to internal government documents.

To mitigate the impact, authorities are considering prioritizing CO₂ supply for critical sectors such as healthcare and civil nuclear energy, where it is used in cooling systems for blood reserves, organs, vaccines, and electricity generation. The government may also request domestic producers to increase output.

Central America

El Salvador and Paraguay approve 2026–2028 cooperation program

The governments of El Salvador and Paraguay approved the 2026–2028 Cooperation Program, which includes six joint development projects, according to Salvadoran Vice Minister of Foreign Affairs Adriana Mira.

Mira stated that El Salvador will act as the “main provider of cooperation,” contributing five initiatives focused on road infrastructure, tourism, and local development. She also noted that one of the projects will be led by the Paraguayan side, although no further details were disclosed.

The agreement was reached during the Second Meeting of the Joint Commission on Technical and Scientific Cooperation between both countries.

According to Paraguay’s Ministry of Foreign Affairs, the First Meeting of the Political Consultation and Bilateral Coordination Mechanism was also held, with the participation of Vice Minister Víctor Verdún.

In an official statement, the Paraguayan government reported that both delegations agreed to identify mechanisms to promote competitiveness, economic growth, and market access. They also committed to signing agreements related to air transport cooperation.

20260330_renta_mh_728x90

International

Macron meets Machado, stresses need for democratic transition in Venezuela

Emmanuel Macron met on Monday at the Élysée Palace with Venezuelan opposition leader María Corina Machado, where they discussed the importance of advancing a democratic transition in Venezuela.

In a message shared on social media, Macron highlighted Machado’s commitment to freedom and stressed the need to achieve a transition that is peaceful and respects the will of the Venezuelan people.

“I received María Corina Machado, Nobel Peace Prize laureate. Together, we discussed her commitment to freedom and the importance of achieving a democratic, peaceful transition in Venezuela that respects the will of its people,” he wrote.

For her part, Machado expressed her “deep gratitude” to Macron and to France for their support of democracy and freedom in Venezuela.

“We have gone through a long and painful journey, and we are now very close to freedom. Venezuela will become a nation of free and equal men and women—prosperous, safe, and united,” she said.