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M. Krishnamurthy to speak at Chicago university conference

M. Krishnamurthy to speak at Chicago university conference

The Hindu2 days ago

The University of Chicago Library will host the 20th International Open Repositories Conference (IORC) from June 15–18, 2025. The theme of this year's conference is 'Twenty Years of Progress, a Future of Possibilities.'
M. Krishnamurthy, professor, Indian Statistical Institute, Bengaluru, has been invited to speak at the event. He has also been selected as one of the fellows of the University of Chicago, U.S. During the conference, he will deliver a lecture on Research Data Management in Social Science.

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M. Krishnamurthy to speak at Chicago university conference
M. Krishnamurthy to speak at Chicago university conference

The Hindu

time2 days ago

  • The Hindu

M. Krishnamurthy to speak at Chicago university conference

The University of Chicago Library will host the 20th International Open Repositories Conference (IORC) from June 15–18, 2025. The theme of this year's conference is 'Twenty Years of Progress, a Future of Possibilities.' M. Krishnamurthy, professor, Indian Statistical Institute, Bengaluru, has been invited to speak at the event. He has also been selected as one of the fellows of the University of Chicago, U.S. During the conference, he will deliver a lecture on Research Data Management in Social Science.

How One Drug Wiped Out 99% Of India's Vultures In Less Than 20 Years
How One Drug Wiped Out 99% Of India's Vultures In Less Than 20 Years

News18

time5 days ago

  • News18

How One Drug Wiped Out 99% Of India's Vultures In Less Than 20 Years

Curated By : Parishmita Saikia Translation Desk Last Updated: May 28, 2025, 16:21 IST Ingesting traces of Diclofenac caused acute kidney failure in vultures, but despite its ban in India in 2006, illegal use persists. (News18) Once a common sight circling above carcasses, vultures have all but vanished from India's skies. Research by the University of Chicago revealed that between 1990 and 2007, 99% of the vulture population in India perished. This collapse has had dire consequences: in the absence of these natural scavengers, infections from decaying animal carcasses have spread, reportedly contributing to five lakh human deaths. The Diclofenac Disaster The principal culprit behind this ecological tragedy is the veterinary drug Diclofenac, commonly used in the 1990s to treat livestock. Though effective, Diclofenac residues in cattle carcasses proved lethal to vultures. Ingesting even trace amounts caused acute kidney failure in the birds. Despite India banning the drug in 2006, its illegal use still persists. Alarming Decline Rates India was once home to an estimated 40 to 50 million vultures. By 2007, that number had dropped catastrophically. Populations of: White-rumped vultures (Gyps bengalensis) declined by 99.9% declined by 99.9% Indian vultures (Gyps indicus) by 95% by 95% Slender-billed vultures (Gyps tenuirostris) by 97% This marks one of the fastest recorded declines of any bird species in history. WWF India Poster Threats Beyond Diclofenac Even after the ban, vulture populations have not rebounded. Vultures breed slowly, laying just one egg annually, and face numerous other threats including: Electrocution from power lines Collisions with wind turbines Injuries from kite strings Their absence has triggered a rise in feral dog and crow populations, increasing the risk of rabies and other zoonotic diseases. Cultural And Economic Fallout Swipe Left For Next Video View all The decline also impacts cultural practices. The Parsi community, which conducts sky burials dependent on vulture scavenging, has had to alter funeral rites. The economic toll is staggering too. Between 2000 and 2005, losses due to vulture extinction were estimated at $69.4 billion annually, affecting industries like leather production. Since 2016, India has undertaken conservation efforts, including the reintroduction of protected vulture species into the wild. However, experts stress that community engagement and stringent enforcement of Diclofenac bans are critical for reversing this crisis. News lifestyle How One Drug Wiped Out 99% Of India's Vultures In Less Than 20 Years

The secret history of teeth revealed: How they originated inside a 465-million-year-old fish's body
The secret history of teeth revealed: How they originated inside a 465-million-year-old fish's body

Time of India

time22-05-2025

  • Time of India

The secret history of teeth revealed: How they originated inside a 465-million-year-old fish's body

Our knowledge about the origins of teeth pertains to that of the entire body, a natural occurrence made up of tissues. But did you know that human teeth evolved from the "body armour" of an extinct fish that lived 465 million years ago? From vertebrates to teeth In a published in the journal Nature on Wednesday, researchers showed how sensory tissue discovered on the exoskeletons of ancient fish is linked to the same "genetic toolkit" that produces human teeth. Tired of too many ads? go ad free now "This shows us that 'teeth' can also be sensory even when they're not in the mouth," said Yara Haridy, co-author of the study and palaeontologist and evolutionary biologist at the University of Chicago. Initially, researchers set out to identify the earliest vertebrate in the fossil record seeking specimens from the Cambrian and Ordovician periods. An obvious sign of a vertebrate species is the presence of internal tubules for dentine, a calcified tissue that is found under the enamel in the human teeth, but also in the external bumps or odontodes in ancient fish armour. While making the use of high-resolution CT scans to analyse the jawless "first fish" species Anatolepis heintzi, the researchers discovered pores filled with dentine. They also compared the fossil to a coterie of ancient fossils and modern marine life. The shocking discovery Upon closer investigations, researchers realised that the supposed dentine-lined pores were like the sensilla, the sensory organs on the shells of crabs, thus making A. Heintz, an ancient invertebrate arthropod and not a vertebrate fish. Vertebrates and invertebrates, both have sensory armours connected to nerves that help them sense their environment. To substantiate the discovery that the fish was an arthropod, the team scanned fossils and modern specimens from snails and barnacles to sharks and catfish. It was revealed that the suckermouth catfish raised in Hardy's own lab had small tooth-like scales on their skin, called denticles, that were connected to nerves. Tired of too many ads? go ad free now This discovery also led to the realisation that ancient vertebrates had the same mineralized tissue that evolved into dentine and then our sensitive teeth. These tissues helped them sense their environment like cold waters or pressure from nearby objects, just like our teeth. Thus, this study also supports a key theory in evolutionary biology called the "outside-in" hypothesis where sensory structures evolved on exoskeletons at least 460 million years ago and were used by animals to make teeth. "Viewed through this evolutionary lens, the fact that teeth in the mouth are extremely sensitive is less of a mystery, and more a reflection of their evolutionary origins within the sensory armour of early vertebrates," wrote the researchers in the study.

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