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.
International
India Approves New Dengue Vaccine as Global Cases Continue to Rise
India has approved a new dengue vaccine as health authorities seek to strengthen prevention efforts against a mosquito-borne viral disease that affects millions of people worldwide every year.
According to the World Health Organization (WHO), half of the global population is currently at risk of contracting dengue, which causes between 100 million and 400 million infections annually.
Since 2021, India has recorded more than one million dengue cases, including at least 1,500 deaths.
The virus can cause high fever, severe headaches, muscle pain, nausea, skin rashes and, in rare cases, internal bleeding and death.
The vaccine, authorized by India’s Central Drugs Standard Control Organization (CDSCO), was developed by Japanese pharmaceutical company Takeda. The Indian Health Ministry said the vaccine is recommended in two doses for people between 4 and 60 years old.
The treatment has already been approved by health authorities in around 40 countries worldwide.
Meanwhile, Indian pharmaceutical company Panacea Biotec has begun the final phase of clinical trials for a single-dose dengue vaccine, aiming to provide another prevention option against the disease.
Brazil recently announced the suspension of the use of another single-dose dengue vaccine developed in the country after two suspected deaths were reported.
International
U.S. Sends First Humanitarian Aid Flight to Cuba Amid Ongoing Tensions Between Both Governments
The United States announced Tuesday the dispatch of a humanitarian aid flight to Cuba as part of a $100 million assistance package proposed by Secretary of State Marco Rubio in May.
The flight departed from Miami with the support of Catholic Relief Services, according to a statement from the U.S. State Department.
The administration of President Donald Trump, which has maintained restrictions on oil supplies to the island and tightened sanctions against the Cuban government, had initially announced humanitarian assistance in November following the devastating impact of Hurricane Melissa.
In February, amid rising tensions between Washington and Havana, Rubio announced an increase in aid while continuing to criticize the Cuban government.
The U.S. secretary of state accused Cuba’s communist authorities of obstructing the distribution of assistance. Washington has insisted that the aid be delivered through the Catholic Church to ensure it reaches Cuban citizens directly.
The Cuban government, meanwhile, has blamed the U.S. oil blockade for making the distribution of humanitarian assistance significantly more difficult.
The aid shipment comes as relations between the two countries remain strained, with disagreements continuing over sanctions, energy supplies and the management of humanitarian support.
International
Controversial Pesticide Law Passes in France, Sparking Ecological Concerns and Ministerial Fallout
The French Parliament on Tuesday approved a highly controversial agricultural law that allows certain farmers to use two pesticides considered harmful to bees, substances that had been banned in France but remain authorized in the European Union.
After the National Assembly, the lower house of Parliament, approved the agricultural bill in the early hours of Tuesday, the Senate gave its final approval with a vote of 214 in favor and 111 against, officially adopting the measure.
Following the decision to reintroduce the use of acetamiprid and flupyradifurone, the office of Environment Minister Monique Barbut announced that she would soon submit her resignation.
Supporters of the measure argue that French producers of sugar beets, apples and hazelnuts need access to these insecticides — banned in France since 2018 and 2019, respectively — to remain competitive with European farmers in other countries where the products are still allowed.
Opponents, including environmental groups, argue that the substances pose serious risks to bees and could also threaten human health.
“Let us be proud of the work that has been done,” said Senator Laurent Duplomb of the conservative Republicans party, one of the main supporters of the measure.
The vote came after France’s Constitutional Council, the country’s highest court, struck down a previous attempt last year to bring back acetamiprid, ruling that the measure could pose risks to human health. That decision followed a petition signed by more than two million people opposing the pesticide’s reintroduction.
The previous bill had also been promoted by Duplomb, who argued that French agriculture needed additional tools to compete in international markets.
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