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Researchers say fossil shows humans, dogs lived in C. America in 10,000 BC

AFP

The fossil of a jaw bone could prove that domesticated dogs lived in Central America as far back as 12,000 years ago, according to a study by Latin American scientists.

The dogs, and their masters, potentially lived alongside giant animals, researchers say.

A 1978 dig in Nacaome, northeast Costa Rica, found bone remains from the Late Pleistocene.

Excavations began in the 1990s and produced the remains of a giant horse, Equus sp, a glyptodon (a large armadillo), a mastodon (an ancestor of the modern elephant) and a piece of jaw from what was originally thought to be a coyote skull.

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“We thought it was very strange to have a coyote in the Pleistocene, that is to say 12,000 years ago,” Costa Rican researcher Guillermo Vargas told AFP.

“When we started looking at the bone fragments, we started to see characteristics that could have been from a dog.

“So we kept looking, we scanned it… and it showed that it was a dog living with humans 12,000 years ago in Costa Rica.”

The presence of dogs is a sign that humans were also living in a place.

“We thought it was strange that a sample was classified as a coyote because they only arrived in Costa Rica in the 20th century.”

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– First of its kind –

The coyote is a relative of the domestic dog, although with a different jaw and more pointed teeth.

“The dog eats the leftovers from human food. Its teeth are not so determinant in its survival,” said Vargas.

“It hunts large prey with its human companions. This sample reflects that difference.”

Humans are believed to have emigrated to the Americas across the Bering Strait from Siberia to Alaska during the last great ice age.

“The first domesticated dogs entered the continent about 15,000 years ago, a product of Asians migrating across the Bering Strait,” said Raul Valadez, a biologist and zooarcheologist from the National Autonomous University of Mexico.

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“There have never been dogs without people,” Valadez told AFP by telephone.

The presence of humans during the Pleistocene has been attested in Mexico, Chile and Patagonia, but never in Central America, until now.

“This could be the oldest dog in the Americas,” said Vargas.

So far, the oldest attested dog remains were found in Alaska and are 10,150 years old.

Oxford University has offered to perform DNA and carbon dating tests on the sample to discover more genetic information about the animal and its age.

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The fossil is currently held at Costa Rica’s national museum but the sample cannot be re-identified as a dog without validation by a specialist magazine.

“This dog discovery would be the first evidence of humans in Costa Rica during a period much earlier” than currently thought, said Vargas.

“It would show us that there were societies that could keep dogs, that had food surpluses, that had dogs out of desire and that these weren’t war dogs that could cause damage.”

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Central America

Mexico and Guatemala launch joint security operation after Agua Zarca border attack

The Government of Mexico announced on Tuesday that it has strengthened coordination with Guatemala following an armed confrontation in the community of Agua Zarca, in Guatemala’s Huehuetenango department, where a soldier was wounded in an attack attributed to organized-crime groups operating on both sides of the border.

The Secretary of Security and Citizen Protection, Omar García Harfuch, confirmed that Mexico is exchanging information with Guatemalan authorities and that Mexican Army units have been deployed along the border to reinforce surveillance and assist in reconnaissance operations.

The attack, Guatemala’s Defense Ministry stated, reflects the “criminal dynamics” dominating that border region, where different groups compete for drug and arms trafficking routes.

According to Guatemala’s Defense Ministry, the clash left a soldier wounded in the leg after suspected criminals crossed from Mexico and opened fire. The wounded soldier is reportedly in stable condition. Authorities also seized high-caliber weapons, explosives, tactical gear and drones, which were handed over for forensic analysis.

Mexican Defense Secretary General Ricardo Trevilla Trejo announced that a coordinated plan of operations will be launched involving both Mexican and Guatemalan forces along the border to counter these criminal networks.

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Harfuch emphasized that the violence is not isolated but symptomatic of the ongoing struggle between criminal organizations for territorial control, and reiterated Mexico’s commitment to bilateral security cooperation and its intention to strengthen institutional presence in vulnerable border zones.

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International

Zelensky meets Pope Leo XIV as review of U.S. peace plan continues

Ukrainian President Volodymyr Zelensky met on Tuesday with Pope Leo XIV in Italy, after pledging to deliver a response to the United States regarding the proposed peace plan aimed at ending the war with Russia.

The meeting with the pontiff took place at the papal residence in Castel Gandolfo, near Rome, where Leo XIV “reiterated the need to continue dialogue and renewed his urgent hope that the ongoing diplomatic initiatives may lead to a just and lasting peace,” the Vatican said in a statement.

His visit to Italy follows Monday’s meetings with European leaders in London and Brussels, amid pressure from U.S. President Donald Trump to agree to a peace plan that Zelensky said he is still reviewing.

According to Zelensky, the plan presented by Washington—originally consisting of 28 points—was reduced to 20 after discussions between Ukrainian and U.S. representatives over the weekend. “We are going to work on those 20 points. We are not completely satisfied with the proposals from our partners,” Zelensky said during an online press conference on Monday.

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International

Japan lifts tsunami alert after strong 7.6-magnitude earthquake hits northern coast

A powerful 7.6-magnitude earthquake struck Japan’s northern coast on Monday, triggering several tsunami waves of up to 70 centimeters, authorities said. The tsunami alert was lifted in the early hours of Tuesday.

According to the U.S. Geological Survey (USGS), the quake occurred at 11:15 p.m. local time (14:15 GMT) off the coast of Misawa, at a depth of 53 kilometers. Japan’s Meteorological Agency (JMA) immediately issued a tsunami warning. The first wave reached a port in Aomori Prefecture at 11:43 p.m. (14:43 GMT), followed by others measuring up to 70 centimeters.

Public broadcaster NHK reported that an employee at a hotel in the city of Hachinohe confirmed that several people were injured. Live footage showed shattered glass scattered across roads, while many residents evacuated to the city hall seeking shelter.

The strong tremor was also felt in Sapporo, where emergency alerts were sent to residents’ mobile phones. A reporter in Hokkaido described a horizontal shaking that lasted around 30 seconds, making it difficult to stay standing.

Before the alert was lifted, the JMA had warned of the possibility of tsunami waves up to three meters high along Japan’s Pacific coast. Government spokesperson Minoru Kihara urged residents to remain in safe areas until the warning was officially lifted.

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