IASbaba's Daily Current Affairs Analysis
Archives
(PRELIMS Focus)
Tuvalu: A Frontline State in the Global Climate Crisis
Environment & Ecology
Why in News?
Scientists have warned that Tuvalu’s entire archipelago could become unliveable by the end of the century due to rising sea levels and climate change. A major concern is the degradation of coral ecosystems: a 2024 marine heatwave reportedly destroyed about 99.9% of Tuvalu’s coral.
Tuvalu – Key Facts
- Location: West-central Pacific Ocean, part of Polynesia.
- Former name: Ellice Islands.
- Comprises nine low-lying islands/islets, including four reef islands and five coral atolls.
- Capital: Funafuti, an atoll and the country’s main population centre.
- Land area is only about 26 sq km, while its EEZ is nearly 1 million sq km.
- Neighbours include Kiribati to the north and Fiji to the south.
Climate Vulnerability
Tuvalu has an average elevation of only around 2 metres. Sea-level rise increases coastal flooding, storm-surge impacts, saltwater intrusion and pressure on freshwater and agriculture. NASA estimates that sea level around Tuvalu has already risen by roughly 15 cm over the past three decades.
Tuvalu is therefore a key example of climate vulnerability of Small Island Developing States (SIDS) and the issue of loss and damage, climate displacement and climate justice.
Source/Reference:
Sal Heartwood Borer: A Major Threat to Sal Forests
Environment & Ecology
Why in News?
A severe infestation of the sal heartwood borer has affected sal forests in Dindori, Madhya Pradesh, prompting approval for the felling of about 1.47 lakh infected sal trees. The outbreak has triggered a large-scale control operation involving the Forest Department and local communities.
Sal Heartwood Borer – Key Facts
- Scientific name: Hoplocerambyx spinicornis.
- Order: Coleoptera.
- Family: Cerambycidae (longhorn beetles).
- It is considered one of the most destructive insect pests of sal (Shorea robusta) forests in India.
- Larvae initially feed beneath the bark and subsequently bore through the sapwood and heartwood, creating tunnels and galleries that severely damage timber.
- An infestation is considered epidemic when more than 1% of sal trees are affected.
Sal Tree – Prelims Facts
Shorea robusta is an important tree of tropical/dry deciduous forests, naturally distributed across Uttarakhand, Uttar Pradesh Terai, Jharkhand, Odisha, Madhya Pradesh, Chhattisgarh and West Bengal. Sal provides timber, leaves, seeds and resin, supporting both forest ecosystems and local livelihoods.
Control Measures
The trap-tree method is being used: selected sal trees are felled and exposed to attract adult beetles, which are subsequently collected and destroyed. Local communities are participating in beetle collection.
Source/Reference:
Central Secretariat Library (CSL): Preserving India’s Administrative Knowledge Heritage
Art & Culture
Why in News?
The Supreme Court has taken suo motu cognisance of the proposed relocation of the 135-year-old Central Secretariat Library (CSL) amid the redevelopment of Shastri Bhavan under the Central Vista project. The Court has sought details from the Centre regarding the proposed space and its adequacy for preserving the library’s extensive collection.
Central Secretariat Library – Key Facts
- Established: 1891 as the Imperial Secretariat Library.
- It shifted from Calcutta to Delhi in 1911 following the transfer of the British Indian capital.
- It subsequently moved through Old Secretariat → North Block → Shastri Bhavan.
- Located in Shastri Bhavan since 1969.
- It is one of the oldest Central Government libraries and the second-largest Central Government library after the National Library, Kolkata.
- Collection: 8.5 lakh+ books/documents, including rare books, official records, gazetteers, census reports, civil reports and Acts of Parliament.
- The oldest identified book dates to 1702.
- CSL has also functioned as a depository of Government of India publications since 1984.
Cultural & Administrative Significance
The library is an important repository of India’s administrative, demographic and historical records. Its collection supports government officials, researchers, scholars and competitive-examination aspirants. Digitisation has expanded access, but preservation of original rare documents remains important.
Source/Reference:
Creatine: More Than a Muscle-Building Supplement
Science & Technology
Why in News?
A 12-week study by Texas A&M University found that creatine supplementation helped adults aged 45–65 years increase lean tissue and muscle strength even without a structured exercise programme. When combined with exercise and a calorie-reduced diet, it produced greater strength gains and helped preserve lean mass while reducing body fat.
What is Creatine?
- A naturally occurring nitrogen-containing organic compound involved in cellular energy metabolism.
- Synthesised mainly in the liver, kidneys and pancreas from amino acids such as arginine, glycine and methionine.
- About 95% of body creatine is stored in skeletal muscles, mainly as phosphocreatine.
- Phosphocreatine rapidly regenerates ATP (adenosine triphosphate), the primary energy currency of cells.
- Dietary sources include meat and seafood; supplements commonly contain creatine monohydrate.
Key Findings of the Study
- 64 healthy adults completed the 12-week intervention.
- Participants received either 10 g/day creatine monohydrate or placebo.
- Even without structured exercise, creatine users gained about 2.4 pounds of lean tissue and improved strength.
- With exercise and calorie restriction, creatine users gained nearly 3 pounds of lean tissue while losing fat.
- Creatine primarily supports strength and power, rather than aerobic capacity.
Sources:
https://www.sciencedaily.com/releases/2026/09/260928100547.htm
G7 (Group of Seven): Global Economic & Energy Coordination
International Relations
Why in News?
The G7 countries agreed on October 2, 2026, to coordinate the release of 100 million barrels of crude oil and petroleum products from emergency reserves through the International Energy Agency (IEA), amid sharply elevated fuel prices and energy-supply disruptions. The G7 also committed to avoiding energy-product export restrictions among members.
What is G7?
- G7 = Group of Seven, an informal grouping of advanced industrial economies.
- Members: Canada, France, Germany, Italy, Japan, UK and USA.
- The European Union participates, represented by the Presidents of the European Commission and European Council, but is not counted among the seven members.
- No treaty or permanent secretariat; operates largely through consensus.
- Presidency rotates annually and the presiding country sets the agenda and hosts the summit.
Historical Evolution
- 1975: France, Germany, Italy, Japan, UK and USA formed the G6 amid the global economic crisis.
- 1976: Canada joined → G7.
- The group’s agenda subsequently expanded from economic issues to security, climate change, technology and geopolitical affairs.
2026 Energy-Reserve Decision
- G7 committed to a coordinated 100-million-barrel release through the IEA.
- A substantial diesel release is to be front-loaded within 20 days.
- The programme is expected to run for four months.
- Members pledged to refrain from energy export restrictions among themselves.
- The move follows the March 2026 IEA emergency oil-stock release commitment of 400 million barrels, with about 300 million barrels reportedly already delivered.
India & G7
India is not a G7 member, but is frequently invited as an outreach/partner country. India participated as a partner country at the 2026 Évian G7 Summit in France.
Sources:
Petroglyphs at Peralam-Kozhummal: Prehistoric Rock Art in Kerala
Art & Culture
Why in News?
Archaeologists have discovered petroglyphs (rock engravings) on a granite rock near the recently restored Megalithic umbrella-stone (Kudakkal) site at Peralam-Kozhummal in Kannur district, Kerala. The discovery was made during an archaeological survey by the Kerala State Department of Archaeology.
What are Petroglyphs?
- Petroglyphs are images or symbols carved, engraved or pecked into a rock surface by removing part of the rock.
- The term derives from Greek petros (stone) + glyphein (to carve).
- Techniques include pecking, incising, abrading, scratching and polishing.
- They differ from petrographs, which are images painted or drawn on rock surfaces using pigments.
- They commonly depict animals, humans, geometric forms and symbolic motifs, providing evidence about prehistoric societies and their cultural practices.
Peralam-Kozhummal Discovery
- Located in Kannur district, Kerala.
- The engravings cover approximately 10 sq m.
- Some portions have deteriorated due to weathering, making the motifs difficult to identify.
- Archaeologists have noted similarities with the petroglyphs at Ettukudukka.
- The site lies close to Ettukudukka and Ariyittappara, other important rock-art locations.
Link with Megalithic Culture
- The discovery is located near Kudakkals (umbrella stones)—distinctive Megalithic burial monuments of Kerala.
- A Kudakkal generally consists of upright stone slabs supporting a large domical capstone.
- Such monuments are associated with burial practices of the Megalithic period.
- Kudakkals are particularly characteristic of Kerala, especially its lateritic regions.
Sources:
(MAINS Focus)
Nobel Prize for Medicine: A Single Cell, a Flash of Light, A Breakthrough
GS III – Science & Technology / GS IV – Ethics
Biotechnology, Neuroscience, and Scientific Innovation
Introduction
The 2026 Nobel Prize in Physiology or Medicine was awarded to German photobiologist Peter Hegemann, American neuroscientist Karl Deisseroth, and German biophysicist Georg Nagel for discovering channelrhodopsin and developing optogenetics—a revolutionary technique that uses light to control nerve cells. The discovery began with a simple question: How did the microscopic alga Chlamydomonas respond to light in half a millisecond—one-twentieth the time the human eye takes? The simplicity of the alga’s biology unlocked the complexities of the human brain. As the Nobel Assembly recognised, this marks “a new era in neuroscience.”
The Discovery: From Algae to Brain Control
Channelrhodopsin
- Source: Chlamydomonas, a microscopic alga.
- Function: A protein that enables the alga to react to light in half a millisecond (vs. 10 milliseconds for the human eye).
- Discovery: Hegemann and Nagel identified channelrhodopsin in the 1990s.
Optogenetics
- Innovation: Deisseroth used channelrhodopsin to develop a “light switch” that controls nerve cells.
- Field Inaugurated: Optogenetics—using light to control neurons genetically modified to express light-sensitive proteins.
- Significance: Enables precise control of neural activity with millisecond precision.
Applications and Impact
Mapping Neural Circuits
- Precise Circuits Identified: Functions and behaviours—from sugar preference to heart rhythms affecting emotions, and how the brain stores fear, anxiety, and depression.
- Hope for Psychiatric and Neurological Disorders: Areas of darkness becoming less intimidating.
- Brain Functions: How different organs are controlled; where feelings, memory, and consciousness reside.
Scientific Significance
- New Era in Neuroscience: Recognition of a transformative technique.
- Precision: Millisecond control of specific neurons.
- Interdisciplinary: Physics, biology, and neuroscience convergence.
Challenges
- Clinical Translation: Optogenetics requires genetic modification; human applications are limited.
- Ethical Considerations: Genetic modification, brain control, and potential for misuse.
- Accessibility: High cost and specialised expertise limit widespread adoption.
- Long-Term Effects: Unknown consequences of long-term neural manipulation.
Way Forward
- Clinical Trials: Explore optogenetics for treating blindness, Parkinson’s, depression.
- Non-Invasive Techniques: Develop less invasive methods (e.g., infrared, ultrasound).
- Ethical Framework: Ensure responsible use; prevent misuse.
- Investment: Fund basic research; support interdisciplinary collaboration.
Conclusion
The 2026 Nobel Prize in Physiology or Medicine recognises Hegemann, Deisseroth, and Nagel for discovering channelrhodopsin and developing optogenetics—a technique that uses light to control nerve cells. From a single algal cell’s instinctive movement toward light, a breakthrough emerged that has transformed neuroscience. Optogenetics enables precise mapping of neural circuits, offering hope for understanding psychiatric and neurological disorders. Yet, challenges of clinical translation, ethical considerations, and accessibility remain. The discovery underscores the value of curiosity-driven basic research—a simple question about algal biology unlocked the complexities of the human brain and inaugurated a new era in neuroscience.
Practice Question
- The 2026 Nobel Prize in Medicine for optogenetics underscores the transformative power of curiosity-driven basic research in unlocking the complexities of the human brain. Critically examine the discovery, applications, and ethical implications of optogenetics in neuroscience. (250 words, 15 marks)
Bird Islands: On India's Bustard Conservation Programme
GS III – Environment / GS II – Governance
Wildlife Conservation, Habitat Protection, and Biodiversity
Introduction
Two male Great Indian Bustards were recently released into the wild at the Desert National Park in Jaisalmer, in a ceremony attended by Union and Rajasthan Environment Ministers. The conservation plan now has 97 birds, with nine more awaiting release; 57 are captive-bred, producing 29 chicks this year and 24 last year. These are notable numbers for a species with a population of around 120 that has teetered on the brink of extinction for nearly half a century. Yet, as the editorial argues, India’s conservation policy is captive to symbolism—and several other birds are not as fortunate.
The Bustard’s Conservation Travails
Historical Decline
- National Bird Candidate: Ornithologist Salim Ali wanted the bustard as the national bird for protection; the Indian Board for Wildlife chose the peacock instead.
- Population Decline: ~1,260 (1969) → 600 (2000) → 140-175 in Rajasthan (2010s).
- Hunting: Prized by hunters, including royalty; shooting reportedly lasted into the late 1970s.
- Habitat Loss: Rise of irrigation in Rajasthan converted grasslands (once dismissed as ‘wastelands’) into irrigated, pesticide-soaked fields and roads.
Power Lines Threat
- Vulnerability: As a heavy bird, the bustard flies at the same height as power lines and has poor vision.
- Supreme Court Order (2021): Low-voltage lines in priority habitats be underground.
- Modification: After opprobrium from renewable energy companies (citing solar power economics), the Court required only a subset—those part of the bird’s ‘critical’ habitat—be made underground.
Cultural Links
- ‘Godawan’: The bird’s local name; cultural links to Rajasthan’s habitat now part of government and private marketing efforts.
The Broader Crisis: Other Threatened Birds
Declining Numbers
- Threatened Species: ~1,256 bird species (11.5% of world’s total) classified as threatened.
- Skylarks: Numbers fallen nearly 80% in 12 years.
- Indian Rollers: Fallen 30% in 12 years.
Symbolism Over Substance
- Tigress from Valmiki: Flown to Buxa.
- African Cheetahs: In enclosures.
- Gir’s Lions: Confined to Saurashtra; straying into human habitations, stoking conflict.
- Delhi Ridge: Being planted with peepal and banyan that ecologists say do not belong to its dry ecology.
The Conservation Ethos
- On Paper: Emphasising coexistence between the wild and human.
- In Practice: Promoting islands and African-style reserves.
- Consequence: Populations that thrive inside walls overflow into villages and fields—as India’s challenges with elephants show.
The Way Forward: Landscapes, Not Species
The Unit of Conservation
- Landscapes: Ought to be the unit of conservation—not species.
- Coexistence: Genuine coexistence between wildlife and human communities.
- Habitat Connectivity: Protect corridors, grasslands, wetlands—not just enclosures.
Policy Reform
- Beyond Symbolism: Move from flagship species to ecosystem-level conservation.
- Renewable Energy: Balance solar power economics with wildlife protection.
- Urban Ecology: Plant native species appropriate to local ecology (e.g., Delhi Ridge).
Community Engagement
- Coexistence: Manage human-wildlife conflict through community participation.
- Livelihoods: Support communities living near conservation areas.
- Awareness: Build public support for landscape-level conservation.
Conclusion
The Great Indian Bustard’s conservation story—from 1,260 (1969) to 97 birds in the conservation plan—reflects both progress and peril. But India’s conservation policy is captive to symbolism: tigresses flown to Buxa, African cheetahs in enclosures, lions confined to Saurashtra, and the Delhi Ridge planted with species that do not belong. Meanwhile, skylarks have fallen 80% and Indian rollers 30% in 12 years. The conservation ethos—on paper emphasising coexistence—is practically promoting islands and African-style reserves. Landscapes, not species, ought to be the unit of conservation. India’s conservation efforts must go beyond symbolism to protect habitats, corridors, and ecosystems—ensuring that all species, not just the charismatic ones, have a future.
Practice Question
- India’s conservation policy is captive to symbolism, promoting islands and African-style reserves rather than landscape-level protection. Critically examine the challenges of wildlife conservation in India and suggest a landscape-based approach. (250 words, 15 marks)
