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Tsunami alert lifted after massive earthquake leads to evacuations in Chile and Argentina

Tsunami alert lifted after massive earthquake leads to evacuations in Chile and Argentina

Time of India03-05-2025

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A powerful earthquake with a 7.4 magnitude struck the Drake Passage, a remote stretch of ocean between South America and Antarctica , with the epicenter located approximately 219 kilometers (136 miles) south of Ushuaia, Argentina , at a shallow depth of 10 kilometers (6 miles). The quake triggered a tsunami alert along Chile 's Strait of Magellan coastline and its research stations in Antarctica.A red alert was issued for the Magallanes region and the Chilean Antarctic Territory by the National Service for Disaster Prevention and Response (SENAPRED) soon after the quake was recorded under the sea.As a precautionary step, 32 individuals from Antarctic research bases and around 1,800 people, including 1,000 from Puerto Williams and 500 from Puerto Natales, were evacuated.With slight increases recorded at Antarctic bases, the tsunami alert was later downgraded and withdrawn after assessments indicated minimal sea level changes.This earthquake is the most significant seismic event in the region since 1949 and triggered a tsunami warning and evacuation along the southern coasts of Chile and Argentina. The quake also resulted in about a dozen aftershocks.'We heard the sirens and didn't wait,' said María López, a mother of two. 'I grabbed my kids and we ran uphill. We've never experienced something like this so close to home.'Chile's location at the convergence of three tectonic plates makes it one of the most seismically active countries globally.Chilean President Gabriel Boric , while suspending his agenda to oversee the emergency response, said, "We are calling for the evacuation of the coastline throughout the Magallanes region. Right now, our duty is to be prepared and heed the authorities."In Argentina's Tierra del Fuego province, the earthquake was felt in Ushuaia and surrounding towns. Authorities stopped water activities and navigation as a precaution.As of now, no casualties or damage have been reported, despite initial fears. Residents are advised to stay informed and follow official guidance as authorities continue to monitor the situation.

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They survived ice ages and hunted mammoths; so why did the Neanderthals suddenly disappear? Now a physicist blames something in the sky
They survived ice ages and hunted mammoths; so why did the Neanderthals suddenly disappear? Now a physicist blames something in the sky

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They survived ice ages and hunted mammoths; so why did the Neanderthals suddenly disappear? Now a physicist blames something in the sky

Live Events Radiation as a Hidden Killer? A Caution Against Oversimplification (You can now subscribe to our (You can now subscribe to our Economic Times WhatsApp channel Neanderthals have long puzzled scientists. These ancient relatives of modern humans thrived across Europe and parts of Asia for hundreds of thousands of years. But around 40,000 years ago, they disappeared, just as Homo sapiens spread across the same regions. What really caused their extinction remains one of human evolution's biggest a new and unusual theory suggests that space weather, not climate, competition, or disease, may have played a decisive role.A recent study by Dr. Agnit Mukhopadhyay, a space physicist from the University of Michigan , proposes that a powerful cosmic event known as the Laschamp excursion might have played a part in the Neanderthals' decline. The findings were published in the journal Science Laschamp event occurred about 41,000 years ago, when the Earth's magnetic poles temporarily flipped. During this brief reversal, the planet's magnetic field, which normally protects us from cosmic radiation, dramatically weakened for several argues that this weakening may have exposed the Earth's surface to much higher levels of ultraviolet (UV) and cosmic radiation, particularly in some parts of the core of the hypothesis is that Neanderthals, already living in small, isolated populations, may have been more vulnerable to this radiation than Homo sapiens. The study claims that Homo sapiens had tighter clothing, used red ochre as UV protection, and took shelter in caves helping them survive the radiation. Neanderthals, in contrast, might have lacked these simulations in the study even show that auroras, a sign of increased solar activity, might have been visible across much of the world during this time, proof, the author argues, of the heightened radiation the theory is bold and imaginative, many experts are José-Miguel Tejero and Montserrat Sanz Borràs, writing for The Conversation, point out that the idea rests on shaky archaeological example, it assumes that Neanderthals didn't wear fitted clothing. While it's true that no sewing needles have been found at Neanderthal sites, there is clear evidence that they processed animal hides and likely wore functional garments using other techniques, such as tying hides with leather cords or fact, genetic studies of lice suggest that humans, possibly including Neanderthals, were already wearing clothes over 200,000 years ago. The absence of needles doesn't prove the absence of study also claims that Homo sapiens used red ochre as sunblock. While experiments show that ochre can somewhat block UV rays, this claim is also disputed. Ochre was widely used by both Neanderthals and modern humans, often for symbolic or cosmetic reasons. There is no solid evidence that either group used it primarily for sun are known to have used ochre for over 100,000 years. In one example, a painted scallop shell found in a Neanderthal cave in Spain shows their symbolic use of pigments long before Homo sapiens arrived in scientists believe that multiple factors caused the Neanderthals' disappearance. These include, interbreeding with Homo sapiens (evident in modern DNA), smaller populations that were more vulnerable to decline, limited long-range hunting tools, unlike the projectile weapons used by sapiens, Changing climate, and possibly, competition for this broader context, Mukhopadhyay's theory appears too narrow. Critics note that there is no archaeological evidence of a sudden, global collapse of Neanderthal populations tied to the Laschamp event. If radiation were such a major factor, it would have also harmed Homo sapiens populations living outside caves in sunny Africa, which doesn't seem to have Neanderthal story is complex. These early humans were not primitive brutes. They developed tools, built shelters, made symbolic objects, and survived in extreme climates for hundreds of thousands of years. They even lived through earlier magnetic reversals, such as the Blake event 120,000 years theory adds an intriguing piece to the puzzle, but it's far from did a shift in Earth's magnetic field doom the Neanderthals?Probably not. While the Laschamp event may have had some environmental impact, there's no strong evidence that it caused Neanderthal extinction . The theory suggests that the disappearance of Neanderthals was likely due to a mix of climate, biology, and human interaction.

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Normalcy returned, tourism thriving in J&K: Jitendra Singh

Live Events (You can now subscribe to our (You can now subscribe to our Economic Times WhatsApp channel Union Minister Jitendra Singh on Sunday said that normalcy has returned and tourism is thriving in Jammu and Kashmir."Visit Pahalgam today, where a tragic incident occurred recently and you will find it crowded with people," he said in a statement issued by the Personnel the Minister of State for Personnel, cited the integration of northeast and Jammu and Kashmir into India's mainstream development."For decades, these regions waited for railways - but under Prime Minister Narendra Modi, trains now run in valleys that were once isolated," he minister recounted the first-time commissioning of Jammu station in 1972 and the long gap in progress until Prime Minister Modi fulfilled this dream over half a century later, flagging off Vande Bharat train the current situation in Jammu and Kashmir, Singh assured that normalcy has returned and tourism is the government's achievements in the last 11 years under Prime Minister Modi's leadership, the minister said that each passing year has marked a new milestone - be it in infrastructure, governance, technology or youth empowerment - creating unprecedented opportunities for every to the prime minister's historic 2016 call of "Start-Up India, Stand-Up India", Singh emphasised how it broadened the employment horizon beyond traditional government jobs."It was only then people realised that job doesn't only mean 'sarkari naukri' (government job), but also innovation, enterprise and startups," he about the young crew members from Manipur, who lost their lives in the tragic Ahmedabad air crash, the minister said it shows "how far the region has come from isolation to being part of the international aviation and hospitality industry ".Singh reaffirmed India's leadership in the fields of space and biotechnology, highlighting the nation's growing global stature in science and said that India's astronaut, Group Captain Shubhanshu Shukla, will serve as the Mission Pilot on the Axiom-4 mission, where he will conduct cutting-edge space biology experiments using indigenously developed biotech kits by the Department of Biotechnology (DBT).Singh said India is steadily progressing towards establishing its own ' Bharat Antariksh Station ' by 2035, marking a significant milestone in the country's space the Modi government's clean record, the minister said that not a single charge of corruption has surfaced against any member of the Union Council of ministers in the last 11 years."Compare that to the previous regime, where scams were the norm," he added.

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Y chromosome disappearing, sperm counts & testosterone levels dropping: What studies are telling about men's health

Y chromosome losing genes over time Rodents offer evolutionary clues Live Events Y chromosome loss already affecting men's health Effects on immunity and cancer 2017 study: Sperm counts declined sharply Testosterone levels also showing long-term decline Chemical exposure, temperature, obesity among possible causes Avoiding further decline Spiny rats' example of shrinking Y Chromosome (You can now subscribe to our (You can now subscribe to our Economic Times WhatsApp channel Scientists are raising concerns about the long-term future of male reproductive health. The Y chromosome, which plays a critical role in male development, is losing genetic material and may disappear in about 11 million years. Separately, a major 2017 study revealed that sperm counts in men from industrialised countries have dropped sharply over the last four Y chromosome, which distinguishes biological males from females, is shrinking. Unlike the X chromosome that carries about 900 genes involved in many bodily functions, the Y retains only about 55. Scientists found that since humans diverged from monotremes like the platypus roughly 166 million years ago, the Y chromosome has lost about five genes per million that rate, projections suggest it could vanish completely in about 11 million years. Though once dismissed, the theory has gained ground after researchers found species like the Japanese spiny rat and certain mole voles reproducing without a Y 2022, researchers discovered a duplicated DNA segment near the SOX9 gene in the Japanese spiny rat. Normally, male traits develop when a gene on the Y chromosome (SRY) activates SOX9. But in this species, the new DNA copy triggers SOX9 on its own, even in animals with two X this fragment was inserted into mice, the animals still developed testes. This shows evolution can find workarounds. If humans ever lose the Y chromosome, natural selection may promote new pathways for male development. Over time, this could lead to different populations evolving in separate any evolutionary shift happens, scientists say many men already lose the Y chromosome in some cells as they age. From around the age of 50, bone marrow stem cells can divide abnormally, resulting in white blood cells that no longer carry the Y chromosome – a condition called 'mosaic loss of Y.'By age 80, more than 40% of men show this loss in a large portion of their blood cells. In a study of 1,153 older Swedish men, those with the loss had shorter lifespans, higher risk of heart disease and cancer, and were seven times more likely to develop Alzheimer' Walsh from the University of Virginia bred mice with Y-lacking blood stem cells. The mice later developed heart failure and died early, indicating the chromosome loss plays a direct role.A gene on the Y chromosome known as UTY influences immune responses. 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