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India and the US have “a natural synergy” and similar aspirations and it is important for them to work together in the field of science and technology not only for the welfare of their own people but also to solve global problems, a top American scientist has said.

“(Through) global collaborations, we can then devise solutions that can be global, but also applicable for local situations,” National Science Foundation (NSF) Director Dr Sethuraman Panchanathan said.

Over the past few months, the India-US collaborations in the field of science and technology have gained momentum and is reflected in the fact that India’s two top Cabinet ministers – External Affairs Minister S Jaishankar and Finance Minister Nirmala Sitharaman – having meetings with Panchanathan at the NSF headquarters here.

In addition, Panchanathan has had meetings with Science and Technology Minister Jitendra Singh both here and in India and with Education Minister Dharmendra Pradhan in India in the last few months.

The discussions with Sitharaman ranged around some of the key existing and futuristic areas of collaboration like AI (Artificial intelligence) for agriculture and COVID-19.

“Two large democracies wanting their citizens to be prosperous, why should we not work together?” he asked.

Panchanathan, both India and the United States have “a natural synergy” and similar aspirations.

“This a very important moment for global collaborations,” Panchanathan told PTI in a recent interview adding that it is time for like-minded partners to be able to work together and do some amazing things for individual nations, but also solve global problems.

“If you take climate, for example, climate not only brings together multiple disciplines that have to contribute, and also be able to arrive at inspirations from the problem being something that they can build new technologies, new solutions, new science, scientific approaches, and so on. But the context of global nature is very, very important,” he said.

Because of the fact that India and the United States share common values, common aspirations, and also the desire for Prime Minister Narendra Modi and President Joe Biden to want to work together and “there is there is an impetus to do more, better and faster,” Panchanathan said.

“I’m very proud to say that we had 35 new projects that we launched when I was at IIT Delhi, within a year,” he said.

“We are funding our US side of investigators, and India’s six digital technology hubs at the Indian Statistical Institute, IIT Bombay, Delhi, Chennai, and Jodhpur. These are the six institutions’ digital technology hubs,” he said.

The Indian-American scientist, who now is driving America’s scientific research and development, said he is passionate about developing and spreading innovation centres.

“It is very important to make sure that we’re investing in fundamental scientific research. We are making sure that there are generations of young talent, who are inspired by science and want to pursue scientific careers. And making that a very very exciting as well as a rewarding career,” he said.

“The second thing, I find this, you also have to make sure that you’re investing in things that make a difference to the context. You’re not trying to replicate something from a different place. But putting it in the context of what the nation needs…. and investing in building those engineering technology and science inspired solutions,” he said.

He said India is full of talented people.

“How do you get domestic talent to play for the country? ….how do you make sure that every bit of talent feels that they have the chance to express themselves to the fullest, and contribute to the nation, the future of the nation,” he said.

Panchanathan said there is a need to build an entrepreneurial culture that not only leverages science and technology but also leverages the context and comes up with innovative solutions.

These things are all simultaneously important and highly interrelated.

“So it’s very important, in my view: strong opportunities, strong innovation centers, strong science, fundamental science investments, and a strong desire to take the context and build solutions,” the top Indian American scientist said.

Panchanathan was born and raised in Chennai.

Panchanathan is married to Sarada “Soumya” Panchanathan, an academic paediatrician and informatician, who has taught medical students, pediatric residents and informatics fellows. They have two children.


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People in Modern Societies Sleep More but Have Irregular Sleep Cycles

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People in Modern Societies Sleep More but Have Irregular Sleep Cycles

A new study challenges the common belief that modern industrialised life results in chronic sleep deprivation. Despite concerns about screen exposure and daily stress impacting sleep quality, findings suggest that individuals in industrialised societies actually sleep longer compared to those in less industrialised settings. Data from multiple studies indicate that sleep duration is higher among people in modern environments, contradicting widely held assumptions. However, while sleep quantity is greater, regular circadian rhythms appear to be more disrupted in these settings.

Study Findings on Sleep Patterns

According to research published in Proceedings of the Royal Society B, anthropologists David Ryan Samson and Leela McKinnon from the University of Toronto Mississauga conducted a meta-analysis of 54 global sleep studies. Their research examined the sleeping habits of 866 healthy adults, revealing that people in hunter-gatherer societies sleep fewer hours on average. Some groups recorded as little as 5.5 hours per night, while the general average in non-industrialised societies was 6.4 hours. In comparison, individuals in industrialised countries averaged over seven hours of sleep nightly.

Efficiency in Sleep and Circadian Rhythm Disruptions

Data also showed that sleep efficiency was higher in industrialised environments. It was reported that 88 percent of time spent in bed was used for sleep, whereas in less-industrialised settings, this figure was lower at 74 percent. Despite this, irregular circadian rhythms were more pronounced in industrialised societies. The circadian function index, which measures regularity in sleep-wake cycles, was recorded at 0.7 in non-industrialised societies but lower at 0.63 in industrialised settings.

Researchers attribute this difference to reduced exposure to natural light cues, which help regulate sleep cycles.

These findings suggest that sleep disturbances in modern environments may not stem from lack of sleep but rather from disrupted biological rhythms.

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New Study Reveals How Pulsars Help Measure Dark Matter in the Milky Way

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New Study Reveals How Pulsars Help Measure Dark Matter in the Milky Way

A new approach to measuring dark matter density in the Milky Way has been introduced by researchers from The University of Alabama in Huntsville (UAH). The study outlines how gravitational acceleration measurements from pulsars can provide insights into the distribution of dark matter in the galaxy. With an expanded dataset including solitary pulsars, scientists have been able to refine their findings, marking a significant advancement in astrophysical research. The ability to measure accelerations at an unprecedented scale has enabled the team to determine local dark matter density with greater accuracy. The findings suggest that in a volume equivalent to Earth, less than 1 kilogram of dark matter is present, highlighting its rarity despite its dominance in the universe’s total mass.

Use of Solitary Pulsars for Dark Matter Measurement

According to the study published on the arXiv preprint server, earlier research relied on binary millisecond pulsars to measure galactic acceleration. Dr. Sukanya Chakrabarti, Pei-Ling Chan Endowed Chair at UAH, explained to Phys.org that most pulsars exist as solitary objects rather than in pairs. By incorporating solitary pulsars into their methodology, the research team has effectively doubled the sample size available for analysis. This expansion allows for a more precise mapping of the Milky Way’s gravitational field, including its dark matter distribution.

Galactic Wobble and Its Role in Measurement

The study also delves into the effects of the Large Magellanic Cloud (LMC) on the Milky Way. Dr. Chakrabarti told Phys.org that the LMC’s gravitational influence creates an imbalance in the Milky Way, leading to an observable wobble. This asymmetry has now been quantified for the first time through pulsar acceleration data. The impact of this gravitational interaction provides further evidence supporting the study’s findings on dark matter distribution.

Addressing Magnetic Braking in Pulsar Acceleration Analysis

A challenge in previous research was accounting for the spindown effect caused by magnetic braking in pulsars. Dr. Tom Donlon, a postdoctoral associate at UAH, explained to Phys.org that binary pulsars were initially used because their orbits remained unaffected by magnetic braking. The latest study has introduced a method to estimate magnetic braking effects with high accuracy, allowing solitary pulsars to be incorporated into acceleration measurements. This advancement broadens the scope of analysis and strengthens the reliability of the findings.

Future Prospects in Dark Matter Research

With the ability to measure accelerations as small as 10 cm/s per decade, the research team believes that mapping the dark matter distribution in the Milky Way with high precision is now within reach. Dr. Chakrabarti stated to Phys.org that while large accelerations near black holes and the galactic center have been measured in the past, this study marks the first time such small accelerations caused by dark matter have been directly observed. The findings contribute significantly to the ongoing efforts to understand the elusive nature of dark matter and its role in shaping the cosmos.

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Solar System’s Journey Through Orion Complex May Have Altered Earth’s Climate



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Solar System’s Journey Through Orion Complex May Have Altered Earth’s Climate

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Solar System’s Journey Through Orion Complex May Have Altered Earth’s Climate

The movement of the solar system through the Orion star-forming complex around 14 million years ago may have influenced Earth’s climate, according to scientists. This dense region of space, part of the Radcliffe Wave galactic structure, could have compressed the heliosphere—the protective shield surrounding the solar system—while increasing interstellar dust reaching Earth. Researchers suggest that this influx of cosmic dust might have left traces in geological records, potentially linking galactic activity to past climate changes.

Solar System’s Passage Through the Radcliffe Wave

According to the study published in Astronomy & Astrophysics, an international research team led by the University of Vienna used data from the European Space Agency’s Gaia mission and spectroscopic observations to determine that the solar system moved through the Radcliffe Wave in the Orion constellation between 18.2 and 11.5 million years ago. The most probable period was estimated between 14.8 and 12.4 million years ago. João Alves, Professor of Astrophysics at the University of Vienna and co-author of the study, stated to Phys.org, that this research builds on prior findings regarding the Radcliffe Wave. This structure, made up of interconnected star-forming regions, includes the Orion complex, which the sun is believed to have passed through.

Potential Impact on Earth’s Climate

The study suggests that the increased presence of interstellar dust may have influenced Earth’s atmosphere. Efrem Maconi, lead author and doctoral student at the University of Vienna, said that this dust might have contained traces of radioactive elements from supernovae, which could be detected in geological records using advanced technology in the future.

The solar system’s passage aligns with the Middle Miocene Climate Transition, a period marked by a shift from a warmer, variable climate to a cooler one, leading to the development of Antarctic ice sheets. Scientists highlight that while interstellar dust could have played a role, the dominant factor in this climate change was a long-term decrease in atmospheric carbon dioxide levels.

Not Comparable to Human-Induced Climate Change

Maconi noted that while interstellar dust could have contributed to past climate shifts, the amount required for significant change would need to be much greater than current data suggests. The Middle Miocene Climate Transition unfolded over hundreds of thousands of years, unlike modern climate change, which is occurring rapidly due to human activities

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