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Subject: Science and Technology

  • Countering deepfakes, the most serious AI threat

    Deepfakes poses threaten the society at various level due to their disruptive potential. The article explains the threat and suggest the measures to deal with the threat. 

    Understanding deepfakes

    • Deepfakes are the digital media (video, audio, and images) manipulated using Artificial Intelligence.
    • This synthetic media content is referred to as deepfakes.
    •  They make it possible to fabricate media — swap faces, lip-syncing, and puppeteer.
    • Access to commodity cloud computing, algorithms, and abundant data has created a perfect storm to democratise media creation and manipulation.
    • Synthetic media can create possibilities and opportunities for all people.
    •  But as with any new innovative technology, it can be weaponised to inflict harm.

    Threat posed by deepfakes

    • Deepfakes, hyper-realistic digital falsification, can inflict damage to individuals, institutions, businesses and democracy.
    • Nation-state actors with geopolitical aspirations, ideological believers, violent extremists, and economically motivated enterprises can manipulate media narratives using deepfakes, with easy and unprecedented reach and scale.
    • Pornographic deepfakes can threaten, intimidate, and inflict psychological harm and reduce women to sexual objects.
    • Deepfakes can be deployed to extract money, confidential information, or exact favours from individuals.
    • Deepfakes can cause short- and long-term social harm and accelerate the already declining trust in news media.
    • Such an erosion can contribute to a culture of factual relativism, fraying the increasingly strained civil society fabric.

    Undermining democracy

    • A deepfake can also aid in altering the democratic discourse and undermine trust in institutions and impair diplomacy.
    • False information about institutions, public policy, and politicians powered by a deepfake can be exploited to spin the story and manipulate belief.
    • A deepfake of a political candidate can sabotage their image and reputation.
    • Voters can be confused and elections can be disrupted.
    • A high-quality deepfake can inject compelling false information that can cast in doubt the voting process and election results.
    • Deepfakes contribute to factual relativism and enable authoritarian leaders to thrive.
    • Another concern is a liar’s dividend; an undesirable truth is dismissed as deepfake or fake news.

    Solution to the problem

    • Media literacy for consumers and journalists is the most effective tool to combat disinformation and deepfakes.
    • Improving media literacy is a precursor to addressing the challenges presented by deepfakes.
    • Meaningful regulations with a collaborative discussion with the technology industry, civil society, and policymakers can facilitate disincentivising the creation and distribution of malicious deepfakes.
    • We also need easy-to-use and accessible technology solutions to detect deepfakes, authenticate media, and amplify authoritative sources.

    Conclusion

    Deepfakes can create possibilities for all people. However, as access to synthetic media technology increases, so does the risk of exploitation. To counter the menace of deepfakes, we all must take the responsibility to be a critical consumer of media on the Internet, think and pause before we share on social media, and be part of the solution to this infodemic.

  • EOS-01 Satellite

    India would launch its latest earth observation satellite EOS-01 and nine international customer spacecraft onboard it’s PSLV-C49.

    Try this PYQ:

    Q.The term ‘IndARC’, sometimes seen in the news, is the name of:

    (a) An indigenously developed radar system inducted into Indian Defence

    (b) India’s satellite to provide services to the countries of Indian Ocean Rim

    (c) A scientific establishment set up by India in Antarctic region

    (d) India’s underwater observatory to scientifically study the Arctic region

    EOS-01

    • EOS-01 is intended for applications in agriculture, forestry and disaster management support.
    • This is the first launch by the Indian Space Research Organisation since the COVID-19-induced lockdown came into force in March.
    • This will be the 51st mission of ISRO’s workhorse, the Polar Satellite Launch Vehicle.

    What is Earth Observation Satellite (EOS)?

    • An EOS or remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others.
    • Starting with IRS-1A in 1988, ISRO has launched many operational remote sensing satellites.
    • Today, India has one of the largest constellations of remote sensing satellites in operation.
    • Currently, *thirteen* operational satellites are in Sun-synchronous orbit and *four* in Geostationary orbit.
    • The data from these satellites are used for several applications covering agriculture, water resources, urban planning, rural development, mineral prospecting, environment, forestry, ocean resources and disaster management.

  • Species in news: Pelagornithids

    Scientists have identified the fossil of a giant bird that lived about 50 million years ago, with wingspans of up to 21 feet that would dwarf today’s largest bird, the wandering albatross.

    Try this PYQ:

    Q.The term “Sixth mass extinction/ sixth extinction is often mentioned in the news in the context of the discussion of

    (a) Widespread monoculture practices in agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.

    (b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65 million years ago that caused the mass extinction of many species including those of dinosaurs.

    (c) Large scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other parts of the world which may cause the disappearance of good native crop plants and the loss of food biodiversity.

    (d) Mankind’s over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution and global climate change.

    Pelagornithids

    • Called Pelagornithids, the birds filled a niche much like that of today’s albatrosses and travelled widely over Earth’s oceans for at least 60 million years.
    • They are known as ‘bony-toothed’ birds because of the bony projections, or struts, on their jaws that resemble sharp-pointed teeth, though they are not true teeth, like those of humans and other mammals.
    • The bony protrusions were covered by a horny material, keratin, which is like our fingernails, the researchers said.
    • Called pseudoteeth, the struts helped the birds snag squid and fish from the sea as they soared for perhaps weeks at a time over much of Earth’s oceans, they said.

    Their extinction

    • The pelagornithids came along to claim the wingspan record in the Cenozoic, after the mass extinction and lived until about 2.5 million years ago. Around that same time, teratogens, now extinct, ruled the skies, they said.
    • The newly described fossil — a 50 million-year-old portion of a bird’s foot — shows that the larger Pelagornithids arose just afterlife rebounded from the mass extinction 65 million years ago, when the dinosaurs, went extinct.
    • The last known pelagornithid is from 2.5 million years ago, a time of changing climate as Earth cooled, and the ice ages began.

  • Water on the Moon

    The Moon has water at places where none had been detected before and has potentially more water than previously believed in regions where it was already understood to exist.

    Try this MCQ:

    Q.NASA’s VIPER mission sometimes seen in news is related to the study of-

    a)Moon

    b)Venus

    c)Sun

    d)None of these

    Water on the moon

    • In two separate studies in Nature Astronomy, scientists have reported findings with potentially huge implications for sustaining humans on the Moon in the future.
    • One study reports the detection of water on the Moon’s sunlit surface for the first time.
    • The other estimates that the Moon’s dark, shadowy regions, which potentially contain ice, are more widespread than thought.

    Why is the discovery of water important?

    • Apart from being a marker of potential life, water is a precious resource in deep space.
    • For astronauts landing on the Moon, water is necessary not only to sustain life but also for purposes such as generating rocket fuel.
    • NASA’s Artemis programme plans to send the first woman and the next man to the Moon in 2024 and hopes to establish a “sustainable human presence” there by the end of the decade.

    What was known about water on the Moon?

    • Previous Moon studies, including by the ISRO Chandrayaan-1 mission, have provided evidence for the existence of water.
    • In 2009, the Moon Mineralogy Mapper (M3) instrument aboard Chandrayaan-1 found water molecules in the Polar Regions.

    What is different in the new discovery?

    • This time, it is confirmed H20 molecules, discovered in Clavius Crater in the Moon’s southern hemisphere.
    • And it is the first time water has been detected on the sunlit side, showing it is not restricted to the shadowy regions.
    • SOFIA, which is a modified Boeing 747SP jetliner that flies at altitudes up to 45,000 feet, has an infrared camera that picked up the wavelength unique to water molecules.
    • The data showed water in concentrations of 100-412 parts per million trapped in 1 cubic metre of soil.

    How could the water have formed?

    • Space rocks carrying small amounts of water could have bombarded the Moon.
    • Alternatively, the Sun’s solar wind could have carried hydrogen, which then reacted with minerals in the lunar soil to create hydroxyl, which later transformed into water.
    • The sunlit surface retaining the water presents a puzzle since the Moon does not have a thick atmosphere.
    • One possibility is that the water gets trapped into tiny bead-like structures that were created in the soil by impacts from space rocks.
    • Alternatively, the water could be hidden between grains of lunar soil and sheltered from the sunlight, NASA said.

    So, how widespread is water on the Moon?

    • On the sunlit side, it is not yet known whether the water SOFIA found is easily accessible.
    • On the other hand, the hidden, shadowy pockets on the lunar surface called “cold traps” are spread across a combined 40,000 sq km, the other study has reported.
    • The cold traps have gone without sunlight for potentially billions of years. If they do contain ice, it means water is going to be more accessible than previously assumed.

    What next?

    • SOFIA will look for water in additional sunlit locations to learn more about how the water is produced, stored, and moved across the Moon.
    • Meanwhile, NASA’s Volatiles Investigating Polar Exploration Rover (VIPER) will carry out a mission to create the first water resource maps of the Moon.

  • Debate over Plasma Therapy’s efficacy

    Recently published findings on convalescent plasma therapy on Covid-19 patients have triggered a debate over its efficacy.

    Plasma Therapy

    • Plasma is the liquid part of the blood. Convalescent plasma, extracted from the blood of patients recovering from an infection, is a source of antibodies against the infection.
    • The therapy involves using their plasma to help others recover. For Covid-19, this has been one of the treatment options.
    • The donor would have to be a documented case of Covid-19 and healthy for 28 days since the last symptoms.

    How is it done?

    • The process to infuse plasma in a patient can be completed quickly.
    • It only requires standard blood collection practices, and extraction of plasma.
    • If whole blood is donated (350-450 ml), a blood fractionation process is used to separate the plasma.
    • Otherwise, a special machine called aphaeresis machine can be used to extract the plasma directly from the donor.
    • While blood is indeed extracted from the donor, the aphaeresis machine separates and extracts the plasma using a plasma kit, and the remaining blood components are returned into the donor’s body.

    WHO’s guidelines

    • WHO guidelines in 2014 mandate a donor’s permission before extracting plasma.
    • Plasma from only recovered patients must be taken, and donation must be done from people not infected with HIV, hepatitis, syphilis, or any infectious disease.
    • If whole blood is collected, the plasma is separated by sedimentation or centrifugation, then injected in the patient.
    • If plasma needs to be collected again from the same person, it must be done after 12 weeks of the first donation for males and 16 weeks for females, the WHO guidelines state.

    What has happened to spark the debate?

    • An ICMR study has found convalescent plasma was not associated with a reduction in progression to severe Covid-19 or all-cause mortality.
    • While the use of this therapy seemed to improve the resolution of shortness of breath and fatigue in patients with moderate Covid-19, this did not translate into a reduction in 28-day mortality or progression to severe disease.
    • Progression to severe disease or death at 28 days after enrolment occurred in 44 (19%) of the participants in the intervention arm as compared to 41 (18%) in the control arm.

    What happens if ICMR does remove the therapy from its guidelines?

    • The authorisation of convalescent plasma as a treatment for Covid-19 in India has led to questionable practices such as calls for donors on social media, and the sale of convalescent plasma on the black market.
    • The ICMR has been cautious because of the trial findings.
    • However, those guidelines are not necessarily binding and it is too early to dismiss convalescent plasma therapy. But there are other issues.
    • The therapy involves resource-intensive processes such as plasmapheresis, plasma storage, and measurement of neutralizing antibodies.

    Way ahead

    • This is a new virus, and around the world, the evidence is still emerging on the best therapeutic options.
    • Covid care is individualized care. Use of the right medication on the right patient does work.
    • Some of the therapies can be continued on compassionate grounds.
    • However, the potential harms of the non-immune components of convalescent plasma should be rigorously investigated.
    • Only donor plasma with detectable titers of neutralizing antibodies should be given to trial participants, to ensure that the potential for benefit exists for all intervention arm patients.

    Try this question:

    Q.What is convalescent plasma therapy? Discuss its efficacy and limitations for COVID-19 treatment.

  • Room Temperature Superconductivity

    A study has shown that a new material superconducts at 15 degrees Celsius but at extremely high pressure.

    In India, we often get to hear about the transmission losses in DISCOMS. Such losses can be zeroed with the application of superconducting cables (which is practically impossible unless we find a normal working one). The phenomena, superconductivity, however, is not new to us, UPSC may end up asking some tricky statements in the prelims regarding it.

    What is Superconductivity?

    • A superconductor is a material, such as a pure metal like aluminium or lead, that when cooled to ultra-low temperatures allows electricity to move through it with absolutely zero resistance.
    • Kamerlingh Onnes was the first scientist who figured out exactly how superconductor works in 1911.
    • Simply put, superconductivity occurs when two electrons bind together at low temperatures.
    • They form the building block of superconductors, the Cooper pair.
    • This holds true even for a potential superconductor like lead when it is above a certain temperature.

    What is the new material?

    • A new material composed of carbon, hydrogen and sulphur superconducts at 15 degrees Celsius.
    • However, it needs ultrahigh pressure of about 2 million atmospheres to achieve this transition, putting off any thoughts of application to the future.
    • The pressure they needed was 267 Gigapascals (GPa), or 2.6 million atmospheres.
    • The pressure at the centre of the Earth is 360 GPa, so it is 75% of the pressure at the centre of the Earth.

    What are Superconductors?

    • Superconductors are materials that address this problem by allowing energy to flow efficiently through them without generating unwanted heat.
    • They have great potential and many cost-effective applications.
    • They operate magnetically levitated trains, generate magnetic fields for MRI machines and recently have been used to build quantum computers, though a fully operating one does not yet exist.

    Issues with superconductors

    • They have an essential problem when it comes to other practical applications: They operate at ultra-low temperatures.
    • There are no room-temperature superconductors. That “room-temperature” part is what scientists have been working on for more than a century.
    • The amount of energy needed to cool a material down to its superconducting state is too expensive for daily applications.

  • NASA’s OSIRIS-REx lands on Asteroid Bennu

    NASA’s OSIRIS-REx spacecraft briefly touched asteroid Bennu, from where it is meant to collect samples of dust and pebbles and deliver them back to Earth in 2023.

    The OSIRIS-REx mission

    • OSIRIS-REx stands for Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer. This is NASA’s first mission meant to return a sample from the ancient asteroid.
    • The mission is essentially a seven-year-long voyage and will conclude when at least 60 grams of samples are delivered back to the Earth.
    • As per NASA, the mission promises to bring the largest amount of extraterrestrial material back to our planet since the Apollo era.
    • The mission was launched in 2016, it reached its target in 2018 and since then, the spacecraft has been trying to match the velocity of the asteroid using small rocket thrusters to rendezvous it.
    • This week, the spacecraft’s robotic arm called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM), made an attempt to “TAG” the asteroid and collected a sample.

    About Bennu

    • Bennu is a B-type asteroid, implying that it contains significant amounts of carbon and various other minerals.
    • It was discovered by a team from the NASA-funded Lincoln Near-Earth Asteroid Research team in 1999.
    • Because of its high carbon content, the asteroid reflects about four per cent of the light that hits it, which is very low when compared with a planet like Venus, which reflects about 65 per cent of the light. Earth reflects about 30 per cent.
    • Around 20-40 per cent of Bennu’s interior is empty space and scientists believe that it was formed in the first 10 million years of the solar system’s formation, implying that it is roughly 4.5 billion years old.

    Why are scientists studying asteroid Bennu?

    • Bennu is an asteroid about as tall as the Empire State Building and located at a distance of about 200 million miles away from the Earth.
    • Scientists study asteroids to look for information about the formation and history of planets and the sun since asteroids were formed at the same time as other objects in the solar system.
    • Another reason for tracking them is to look for asteroids that might be potentially hazardous. It is also relatively close to the Earth.
    • It is for these reasons that scientists are interested in gathering information about this particular asteroid.
    • Significantly, Bennu hasn’t undergone drastic changes since its formation over billions of years ago and therefore it contains chemicals and rocks dating back to the birth of the solar system.

    How do chemicals and rocks offer scientists clues about the solar system?

    • Because of Bennu’s age, it is likely to contain material that contains molecules that were present when life first formed on Earth, where life forms are based on carbon atom chains.
    • Even so organic material like the kind scientists hope to find in a sample from Bennu doesn’t necessarily always come from biology.
    • It would, though, further scientists’ search to uncover the role asteroids rich in organics played in catalyzing life on Earth.

    Back2Basics: Asteroid

    • Asteroids are rocky objects that orbit the Sun, much smaller than planets. They are also called minor planets.
    • According to NASA, 994,383 is the count of known asteroids, the remnants from the formation of the solar system over 4.6 billion years ago.
    • Asteroids are divided into three classes. First, those found in the main asteroid belt between Mars and Jupiter, which is estimated to contain somewhere between 1.1-1.9 million asteroids.
    • The second group is that of Trojans, which are asteroids that share an orbit with a larger planet.
    • The third classification is Near-Earth Asteroids (NEA), which have orbits that pass close by the Earth. Those that cross the Earth’s orbit are called Earth-crossers.
    • More than 10,000 such asteroids are known, out of which over 1,400 are classified as potentially hazardous asteroids (PHAs).

  • Discovering the Tubarial Glands

    Researchers from the Netherlands have discovered a new location of salivary glands.

    Try this PYQ:

    Q.With references to the scientific progress of ancient India, which of the statements given below are correct?

    1. Different kinds of specialized surgical instruments were in common use by 1st century AD.
    2. Transplant of internal organs in the human body had begun by the beginning of 3rd century AD.
    3. The concept of sine of an angle was known in 5th century AD.
    4. The concept of cyclic quadrilaterals was known in 7th century AD.

    Select the correct answer using the code given below:

    (a) 1 and 2 only

    (b) 3 and 4 only

    (c) 1, 3 and 4 only

    (d) 1, 2, 3 and 4

    Tubarial Glands

    • The salivary gland system in the human body has three paired major glands and over 1,000 minor glands that are spread throughout the mucosa.
    • These glands produce saliva necessary for swallowing, digestion, tasting, mastication and dental hygiene.
    • When researchers were studying scans from about 100 people, they found a bilateral structure at the back of the nasopharynx and these glands had characteristics of salivary glands.
    • Researchers have proposed the name “tubarial glands” for their discovery.
    • The researchers believe that these glands would qualify as the fourth pair of major salivary glands.
    • The proposed name is based on their anatomical location; the other three glands are called parotid, submandibular and sublingual.

    Why are these glands being discovered only now?

    • The location of these glands is at a poorly accessible anatomical location under the base of the skull, which is an area that can only be visualized using nasal endoscopy.
    • Further, conventional imaging techniques such as a CT scan, MRI and ultrasound have not allowed the visualization of these glands.
    • For the scans done on the 100 patients, a new type of scan called the PSMA PET/CT scan was used, which was able to provide the high sensitivity and specificity required to detect these glands.

    What is the purpose of these glands?

    • So far, researchers suspect that the physiological function of the glands is to moisten and lubricate the nasopharynx and the oropharynx.
    • However, this interpretation needs to be confirmed with additional research.

    Significance of this discovery

    • The discovery is potentially good news for some cancer patients with head and neck cancers.
    • Patients with head and neck cancers and tumours in the tongue or the throat are treated with radiation therapy that can damage the new salivary glands, whose location was not previously known.
    • Oncologists will be able to circumvent these areas and protect them from the side effects of radiation which can lead to complications such as trouble speaking, swallowing and speaking.
    • Some patients may even face an increased risk of caries and oral infections that can significantly impact their life.

  • The NEP 2020 must look beyond just data science and AI

    The article deals with the issues with the emphasis on the coding instead of understanding the basic algorithmic process.

    Issues with focusing on coding in NEP 2020

    • The National Education Policy 2020 (NEP) envisages putting greater emphasis on mathematical and computational thinking throughout the school years.
    • The framing in the NEP appears to put it at the same level of distinction as the more instrumental ‘coding’, and almost as a mere tool towards the utilitarian goals of artificial intelligence (AI) and data science.
    • An overemphasis on learning the nitty-gritty of specific programming languages prematurely — even from middle school — may distract from focusing on the development of algorithmic creativity.

    What is coding?

    Coding is basically the computer language used to develop apps, websites, and software. Without it, we’d have none of the most popular technology we’ve come to rely on such as Facebook, our smartphones, the browser we choose to view our favorite blogs, or even the blogs themselves. It all runs on code.

    About computation and algorithms

    • Algorithmics is the abstract process of arriving at a post-condition through a sequential process of state changes.
    • It is among the earliest human intellectual endeavours that has become imperative for almost all organised thinking.
    • All early learning of counting and arithmetic is method-based, and hence algorithmic in nature, and all calculations involve computational processes encoded in algorithms.
    • The core algorithmic ideas of modern AI and machine learning are based on some seminal algorithmic ideas of Newton and Gauss, which date back a few hundred years.
    • Though the form of expressions of algorithms — the coding — have been different, the fundamental principles of classical algorithm design have remained invariant.

    Algorithms in modern world

    • In the modern world, the use of algorithmic ideas is not limited only to computations with numbers, or even to digitisation, communication or AI and data science.
    • They play a crucial role in modelling and expressing ideas in diverse areas of human thinking, including the basic sciences of biology, physics and chemistry, all branches of engineering, in understanding disease spread, in modelling social interactions and social graphs, in transportation networks, supply chains, commerce, banking and other business processes, and even in economic and political strategies and design of social processes.
    • Hence, learning algorithmic thinking early in the education process is indeed crucial.

    So, how coding is different from arithmetics?

    • Coding is merely the act of encoding an algorithmic method in a particular programming language which provides an interface.
    • AS computational process can be invoked in a modern digital computer.
    • Thus, it is less fundamental.
    • While coding certainly can provide excellent opportunities for experimentation with algorithmic ideas, they are not central or indispensable to algorithmic thinking.
    • After all, coding is merely one vehicle to achieve experiential learning of a computational process.

    Way forward

    • Instead of focusing on the intricacies of specific programming languages, it is more important at an early stage of education to develop an understanding of the basic algorithmic processes behind manipulating geometric figures.
    • Indeed, this is a common outcome of the overly utilitarian skills training-based approaches evidenced throughout the country.

    Conclusion

    The NEP guideline of introducing algorithmic thinking early is a welcome step, it must be ensured that it does not degenerate and get bogged down with mundane coding tricks at a budding stage in the education process.

  • Thanjavur Art Plates

    The makers of the Thanjavur Art Plate, with its roots in a craft that dates back to the Marathas of the 1800s, are banding together for its cultural and commercial rejuvenation.

    Must read:

    All time GI tags in news

    Thanjavur Art Plates

    • The Thanjavur Art Plate is an artefact which is exclusively made in Thanjavur, Tamil Nadu, India.
    • It is a circular plate made as a gift item. It is a handicraft consisting of metals such as silver, bronze, and copper embossed with figures of gods and goddesses at its centre.
    • Patronised by Maratha ruler Serfoji II (1777-1832), Thanjavur Kalai craftsmen were kept busy with orders for royal gifts, mostly decorative salvers, jewel boxes and vessels like water pots and ewers.
    • In its contemporary version, the craft has been commercially reinterpreted as ‘Thanjavur kalai thattu’ or Thanjavur Art Plate, a ceremonial platter made with silver, copper and brass layers in three stages.
    • The base is plated with alternate copper and silver panels, a bigger embossed silver motif on the central section, and the setting of globular jigna or sequins in the secondary relief.
    • It was given a Geographical Indications (GI) tag in 2007, as a proof of its long heritage.

    Back2Basics: Geographical Indications in India

    • A Geographical Indication is used on products that have a specific geographical origin and possess qualities or a reputation that are due to that origin.
    • Such a name conveys an assurance of quality and distinctiveness which is essentially attributable to its origin in that defined geographical locality.
    • This tag is valid for a period of 10 years following which it can be renewed.
    • Recently the Union Minister of Commerce and Industry has launched the logo and tagline for the Geographical Indications (GI) of India.
    • The first product to get a GI tag in India was the Darjeeling tea in 2004.
    • The Geographical Indications of Goods (Registration and Protection) Act, 1999 (GI Act) is a sui generis Act for the protection of GI in India.
    • India, as a member of the WTO, enacted the Act to comply with the Agreement on Trade-Related Aspects of Intellectual Property Rights.
    • Geographical Indications protection is granted through the TRIPS Agreement.