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.

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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.

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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.

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“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.

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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

Mexico and Guatemala Agree on Five-Point Binational Plan for 2027

Mexico and Guatemala agreed Tuesday on a 2027 Binational Plan built around five areas of cooperation, along with a schedule of meetings and initiatives aimed at making progress by the end of 2026 on security, border infrastructure, human mobility, development and technical and social cooperation.

The agreement was announced by the foreign ministers of both countries following a meeting in Mexico City.

Mexican Foreign Minister Roberto Velasco said the plan will establish the “direction and priorities” of bilateral relations for next year. His Guatemalan counterpart, Carlos Ramiro Martínez, said the meeting allowed both governments to make decisions, schedule activities and revitalize bilateral cooperation mechanisms.

Security and border infrastructure

In the area of security, the two governments have nearly completed negotiations on a new memorandum of understanding for the Mexico-Guatemala High-Level Security Group (Ganseg), which was reactivated in 2025.

The countries expect to sign the agreement in the coming months to strengthen coordination and their ability to respond to shared security threats.

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Regarding their nearly 1,000-kilometer shared border, Mexico and Guatemala agreed to advance infrastructure improvements at border crossings and continue work on a joint cargo clearance program between Ciudad Hidalgo and Tecún Umán, two border areas separated by the Suchiate River.

The measures are intended to facilitate bilateral trade while making cross-border exchanges safer and more efficient.

The two governments will also continue defining a route toward a railway connection between their countries through Line K of Mexico’s Interoceanic Corridor of the Isthmus of Tehuantepec (CIIT), with the aim of strengthening economic and community ties.

Migration and development

On human mobility, Mexico and Guatemala will maintain coordination to ensure safe, orderly and dignified returns, while strengthening protection for people in transit.

The bilateral agenda also includes a second phase of the Sembrando Vida program in Guatemala, which is expected to benefit 10,000 people across 15 departments.

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Both countries will also advance initiatives under Juntos para el Bienestar, as well as six technical, scientific and energy cooperation projects approved by the Joint Commission.

The agreements seek to strengthen bilateral ties and establish concrete priorities for cooperation between Mexico and Guatemala during 2027.

International

France to Expel Two Iranian Diplomats Over Alleged Attack on French Officials

French Foreign Minister Jean-Noël Barrot announced Tuesday, August 18, 2026, that France will expel two Iranian diplomats in response to what Paris described as an attack on two French representatives in Iran last month.

“Two French diplomats were scandalously and deliberately assaulted on July 19. I had announced that this intolerable act would have consequences. It has now happened. Two Iranian diplomats in France will be expelled in the coming days,” Barrot said in a message posted on X.

The two Iranian diplomats have been declared persona non grata and will be required to leave France within the coming days, according to the French foreign minister.

About a month ago, Barrot said that two members of the French diplomatic staff had been detained by Iranian security forces for several hours. One of them was also subjected to harassment, he said.

The French government described the incident as an “extremely serious act of intimidation” that violated diplomatic immunity.

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The two French embassy staff members were working on programs supporting Iranian civil society, particularly initiatives involving artists and researchers.

Iran has denied France’s allegations regarding the incident. The diplomatic dispute comes amid already strained relations between Paris and Tehran.

International

Heat wave puts more than 70 million Americans under alerts as temperatures near 46°C

36 deaths reported due to heat wave in Nuevo Leon, Mexico

More than 70 million people remained under heat alerts Monday as an intense heat wave continued across the southern United States, particularly Florida and states along the Mexican border, where temperatures and heat indexes could reach as high as 46 degrees Celsius, according to the National Weather Service (NWS).

Several cities recorded or tied temperature records over the weekend and into Monday, including Miami and Fort Lauderdale in Florida; Laredo, Borger and Austin’s airport in Texas; Atlanta, Georgia; Raleigh and Charlotte, North Carolina; and Memphis, Tennessee.

The NWS warned that the heat wave will continue affecting the southern and southeastern United States, with maximum temperatures expected to remain near 38°C to 40°C for several days. The heat index, which combines temperature and humidity to estimate how hot conditions feel, could reach 46°C.

The extreme heat is also spreading into the Southwest, where temperatures began rising again between Monday and Tuesday. Forecast highs in the region range from about 38°C to 43°C.

Heat alerts remain in effect across Nevada, Arizona and California, including areas in southern Arizona and California near the Mexican border, as authorities warn of the risks posed by prolonged extreme temperatures.

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The NWS urged residents to limit outdoor activity, stay hydrated, ensure access to air conditioning or cooling centers, and check on vulnerable friends, neighbors and family members.

The United States is experiencing a summer marked by above-average temperatures and repeated heat waves. One of the most intense episodes occurred during the July 4 weekend, when extreme heat was blamed for roughly 30 deaths.

July was the hottest month ever recorded in the United States since measurements began, with the average temperature across the contiguous country approaching 25°C, according to the National Oceanic and Atmospheric Administration (NOAA).

The combination of extreme heat and drought conditions has also fueled wildfires. Nearly 3 million hectares have burned across the country so far in 2026, making it the largest area affected by wildfires in a decade.