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.
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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
Three Killed, Four Injured in Shooting Near Seattle’s Space Needle
Three people were killed and at least four others, including a young child, were injured in a shooting near Seattle’s iconic Space Needle on Sunday, authorities said.
The shooting occurred during the annual Bite of Seattle food festival, held in one of the city’s busiest tourist areas. Police have arrested one suspect and are searching for a second individual believed to be involved.
Assistant Police Chief Tyrone Davis said officers responded to reports of gunfire at about 6:00 p.m. local time (0100 GMT Monday).
“Two individuals were shooting at each other,” Davis said, adding that investigators recovered two firearms at the scene.
Authorities confirmed that three people died as a result of the shooting. The identities of the victims have not yet been released.
Washington Governor Bob Ferguson said members of the State Patrol’s SWAT team had been deployed to assist Seattle police with the investigation.
Seattle Mayor Katie Wilson described the incident as a “horrific act of violence.”
“Our focus is on those who lost their lives, those fighting to recover, and the families standing beside them,” Wilson said in a statement.
Susan Gregg, a spokesperson for Harborview Medical Center, said the hospital admitted four victims: a young child, a 23-year-old man, a 39-year-old woman and another woman whose age was not immediately known and who required emergency surgery.
According to police, the hospitalized victims are in stable condition.
Witnesses told local television station KIRO that they heard multiple gunshots before crowds fled the festival area.
“At first I thought it was fireworks, and then everyone started running,” witness Nick Bate told the station.
Another witness told AFP that panic spread immediately after the shooting.
“We just started running. I didn’t even look to see where the shooter was. I just kept hearing the gunfire,” the witness said.
International
China Accuses U.S. AI Firms of Using Chinese Models to Train Artificial Intelligence
China on Monday accused U.S. artificial intelligence companies of using Chinese AI models to train their own systems, escalating tensions in the technological rivalry between the world’s two largest economies.
In a statement, China’s Ministry of Commerce said it has evidence that “many U.S. artificial intelligence companies have distilled Chinese models during their research, development and training processes.”
Model distillation is a machine learning technique that transfers knowledge from a larger, more advanced model to a smaller and faster one, allowing it to perform efficiently while requiring fewer computing resources. The approach is widely used across the AI industry.
U.S. officials have previously argued that Chinese firms employ distillation on a large scale to unlawfully replicate proprietary American AI systems. Beijing dismissed those allegations, calling them unfounded.
According to the Chinese ministry, Washington’s accusations “lack both factual and legal basis, apply double standards in practice, and represent a typical act of AI hegemony.”
“China will take all necessary measures to firmly safeguard its legitimate rights and interests,” the ministry added.
The statement comes days after a senior White House official accused Chinese startup Moonshot AI of secretly copying Anthropic’s most advanced AI model to develop its Kimi K3 system.
Moonshot’s latest model drew significant attention across the U.S. technology sector following its release, reigniting debate over China’s growing competitiveness in artificial intelligence.
Last week, U.S. Treasury Secretary Scott Bessent warned that Washington could impose sanctions on China as the administration considers restricting or banning foreign-developed open-source AI models, many of which are built using model distillation techniques.
International
Costa Rica Seeks to Expand Extradition Law to Target Organized Crime
Costa Rican President Laura Fernández announced that her administration will submit a constitutional reform bill to Congress on August 3 aimed at expanding the legal grounds for extraditing Costa Rican nationals accused of serious crimes.
Under current legislation, Costa Rican citizens can only be extradited to face prosecution abroad for international drug trafficking and terrorism. The proposed reform would broaden that list to include a wider range of organized crime offenses.
Speaking before the Legislative Assembly while presenting a broader package of public security initiatives, Fernández said the proposal seeks to strengthen the country’s fight against transnational criminal organizations.
“We are going to expand the grounds for extradition to include serious crimes,” the president said.
The initiative would allow the extradition of Costa Rican nationals accused of financing drug trafficking or terrorism, money laundering, human trafficking, migrant smuggling, arms and organ trafficking, contract killings, organized crime-related homicides, cybercrime and cyberterrorism.
“We will not stop in our national crusade against organized crime or in our relentless war against drug trafficking,” Fernández said.
A political ally of U.S. President Donald Trump, Fernández took office in May after campaigning on a promise to adopt a tougher stance against organized crime, which she has linked to the recent rise in violence in Costa Rica, a country long regarded as one of the safest in Latin America.
Costa Rica currently permits the extradition of its own citizens only for international drug trafficking and terrorism, following a 2025 constitutional amendment promoted by former President Rodrigo Chaves, who now serves as the country’s Minister of the Presidency and Finance.
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