International
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.
“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.”
– 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.
“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.
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.”
International
Senate Bipartisan Vote Moves Measure to Block Further U.S. Military Action in Venezuela
The U.S. Senate took a significant step on Thursday toward limiting President Donald Trump’s military authority in Venezuela, advancing a bipartisan war powers resolution that would block further military actions without explicit congressional approval, lawmakers said.
In a 52-47 procedural vote, the measure moved forward after five Republican senators joined all Democrats in supporting the effort. The resolution aims to require presidential authorization from Congress before the United States can engage in any new hostilities against Venezuela, a rare rebuke of Trump from both sides of the aisle following the controversial military operation that resulted in the capture of Venezuelan leader Nicolás Maduro.
If ultimately passed, the legislation would obligate the administration to withdraw U.S. forces from any imminent hostilities in or against Venezuela unless Congress explicitly authorizes such actions. However, the measure’s future remains uncertain as it heads next to the House of Representatives, where a Republican majority is less likely to approve it, and any final version would likely face a presidential veto. Overriding a veto would require a two-thirds majority in both chambers, a high threshold in the current political landscape.
President Trump has sharply criticized Republican senators who broke ranks to support the resolution, saying they should not be re-elected and arguing that the measure undermines his authority to act in national defense. Nevertheless, the vote signals growing bipartisan concern in Congress about unchecked executive military action in the absence of legislative authorization.
International
Petro and Trump Agree on Joint Action Against ELN Guerrillas After Tense Diplomacy
Colombian President Gustavo Petro and his U.S. counterpart Donald Trump agreed on “joint actions” to combat the National Liberation Army (ELN) guerrilla group operating along the Colombia–Venezuela border, Colombia’s Interior Minister Armando Benedetti said on Thursday.
The announcement came after a period of heightened diplomatic tension triggered by recent U.S. airstrikes in Venezuela, the capture of Venezuelan President Nicolás Maduro, and threats of possible U.S. military action in Colombia. The phone call Wednesday evening was the first direct conversation between Petro and Trump since both leaders took office, and it helped ease the strained relationship.
During the call, both presidents committed to carry out joint efforts against the ELN, a guerrilla group that has repeatedly attacked Colombian security forces and is accused of kidnapping soldiers. In December, the ELN declared a “armed strike,” confining civilians in areas under its control in response to perceived threats of U.S. intervention.
According to Benedetti, Petro welcomed Trump’s invitation to meet in Washington and asked for U.S. support to “strike hard” against ELN positions along the porous border with Venezuela, where guerrillas often flee after clashes with Colombian forces.
The border region is a longstanding flashpoint, where armed groups, drug traffickers and illegal mining networks compete for control. Previous attempts by Petro’s government to negotiate peace with the ELN have stalled after a major offensive in Catatumbo that left hundreds dead and displaced thousands.
International
Lula Vetoes Bill That Would Have Shortened Bolsonaro’s Prison Sentence
Brazilian President Luiz Inácio Lula da Silva vetoed on Thursday a bill that would have significantly reduced the prison sentence of his far-right predecessor, Jair Bolsonaro, who is currently serving time for attempting a coup d’état.
Despite the veto, the conservative-majority Congress retains the power to override the decision through a vote.
In September, following a landmark trial, Brazil’s Supreme Court sentenced Bolsonaro to 27 years in prison after finding him guilty of conspiring to remain in power in an “authoritarian” manner following his defeat to Lula in the 2022 presidential election.
The 70-year-old former president has been incarcerated in a Brasília prison since late November. Earlier this month, the Supreme Court rejected a request for house arrest on health grounds.
Under the current legal framework, Bolsonaro would be required to serve approximately eight years before becoming eligible for sentence leniency. However, a bill passed by Congress in December could have reduced that period to just over two years, prompting Lula’s veto.
Senate Bipartisan Vote Moves Measure to Block Further U.S. Military Action in Venezuela
Petro and Trump Agree on Joint Action Against ELN Guerrillas After Tense Diplomacy
Lula Vetoes Bill That Would Have Shortened Bolsonaro’s Prison Sentence
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
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