1. PANAMA CANAL (Syllabus: GS Paper 1 – Geography/Places in News)

Context: On August 15, 1914, the first ship navigated the Panama Canal, marking a historic milestone. Now, a century later, this crucial shipping lane faces a significant threat from climate change.

Panama Canal

• About: The Panama Canal, a man-made waterway, serves as a vital link connecting the Atlantic and Pacific oceans by traversing the Isthmus of Panama.
• Strategic Importance: Recognized as one of the world's two most crucial artificial water passages, the Panama Canal shares this distinction with the Suez Canal, playing a pivotal role in international maritime trade.
• Dimensions: Stretching approximately 80 kilometers in length, the canal serves as a remarkable feat of engineering, significantly shortening travel distances for ships.

o The Panama Canal is a highly-engineered system, not just a simple waterway, utilizing locks and elevators to elevate ships from one end to the other.

• Climate Change Threat: The canal is vulnerable to climate change, with historical rainfall shortages occurring approximately every 20 years due to major El Niño events, and the last 26 years have seen three significant deficits.
• Recent Rainfall Deficits: In recent decades, the Panama Canal has experienced multiple major rainfall deficits, exacerbating challenges in maintaining its water supply for efficient operation.

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2. SRI AUROBINDO GHOSH (Syllabus GS Paper 1 – History)

Context: PM Modi paid homage to the revered philosopher, thinker, and spiritual leader Sri Aurobindo, on his 152nd birth anniversary.

Sri Aurobindo Ghosh

• Early Life: Born to surgeon Krishna Dhan Ghose and Swarnalata Devi in Calcutta on August 15, 1872.
• Education: Passed the Indian Civil Service Examination in 1890 but failed in the horsemanship test, preventing entry into the service.

o Accepted an appointment in the Baroda state service in 1893, worked for 13 years, and rose to the post of principal of the Baroda State College.

• Revolutionary: He became a leading figure in the freedom movement, writing fearless articles for the English newspaper Bande Mataram.
• Contributions: Contributed articles to the Bengali weekly Yugantar.
• Foundation: Started the weekly English journal Dharma, promoting Swaraj or freedom from British rule.
• Anushilan Samiti: Helped found the youth club Anushilan Samiti, protesting against British government atrocities.
• Opposition to Bengal Partition: Protested against the 1905 Partition of Bengal and advocated for the boycott of British institutions and goods.
• Alipore Bomb Case: Charged in the Alipore Bomb Case (1906-1910), sentenced to jail, and spent one year in solitary confinement at Alipore Central Jail in Calcutta.
• Founding: Established a community of spiritual seekers that became the Sri Aurobindo Ashram in 1926.
• Focus on Integral Yoga: Devoted life to developing “integral” yoga, aiming to elevate consciousness and self-awareness.
• Literary Works: The Life Divine, Synthesis of Yoga and Savitri.

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3. MALABAR TREE TOAD (MTT) (Syllabus: GS Paper 3 – Env and Eco)

Context: Climate change may decrease the distribution range of the Malabar Tree Toad (MTT) by up to 69% of the current estimated distribution in India’s protected areas (PAs), according to a study conducted by a concerned group of citizens and scientists.

Malabar Tree Toad (MTT)

• About: MTT is endemic to India's Western Ghats, a unique region known for its biodiversity.
• Monotypic Genus: MTT is the only species in the monotypic genus Pedostibes, meaning it is the sole representative of this genus.
• Arboreal Species: It is the only arboreal toad species in India, capable of climbing trees, unlike most ground-dwelling toads in the region.
• Discovery: First discovered in 1876, MTT was not seen for over 100 years and was 
• Rediscovered in: 1980 at Silent Valley National Park in Kerala.
• Distribution: The species is nearly widespread across the Western Ghats.
• Threat: A changing climate has endangered many species in the Western Ghats, a recognized global biodiversity hotspot.

o The Western Ghats host 252 amphibian species, with 17 critically endangered and 40 classified as ‘data deficient.’

o Globally, 40.7% of amphibians (8,011 species) are the most threatened vertebrates due to human activities like agriculture, infrastructure development, and harvesting.

• Conservation Status: IUCN - Endangered

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4. AIM-174B MISSILE (Syllabus: GS Paper 3 – Sci and Tech)

Context: The US Navy has unveiled the AIM-174B missile to counter China's growing aerial dominance. This strategic move aims to enhance U.S. air defense capabilities in the region.

AIM-174B Missile

• About: The AIM-174B is an air-launched version of the versatile SM-6 missile developed by the US Navy.
• Capabilities: Its range exceeds that of China’s PL-15 missile.
• Range: It is an extremely long-range air-to-air missile with the capability to strike targets up to 400 km (250 miles) away.
• Deployment: Deployed in the Indo-Pacific region as part of a broader strategy to enhance US power projection amid escalating regional tensions.
• Engagement Capabilities: It engages high-priority ground targets like air defense sites and warships, operating in a quasi-ballistic manner.
• Advantages:

o Extended Range: The AIM-174B can fly several times farther than the AIM-120 AMRAAM, its predecessor.

o Surface Strike Capability: It retains the surface strike capability of the SM-6, useful for targeting large maritime vessels.

o Strategic Deterrence: It helps keep PLA carrier-hunting aircraft out of range and can threaten Chinese planes attacking Taiwan.

Indo-Pacific Region

• About: It includes the Pacific and Indian Oceans in Southeast Asia. Previously referred to as the Asia-Pacific region, it has recently been renamed to Indo-Pacific.
• It comprises 40 countries. (India is a part)

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5. INDIA-UAE CEPA (Syllabus: GS Paper 3 – Economy)

Context: As India reviews the Comprehensive Economic Partnership Agreement (CEPA) with the UAE, it should target the removal of duty concessions on gold, silver, platinum, and diamonds, and consider adjustments to rules of origin norms, according to the Global Trade Research Initiative (GTRI).

Global Trade Research Initiative (GTRI)

• About: A research Group focused on Climate Change, technology and trade.
• Aims:  To create high-quality and jargon-free outputs for governments and industry from the perspective of development and poverty reduction.

GTRI Report on India-UAE CEPA:

• Trade data showed that silver imports, largely coming from the UAE, surged more than 400% in July compared to period last year.
• The UAE is the third largest trading partner of India with $83.65 billion bilateral trade in 2023-24.
• As regards Comprehensive Economic Partnership Agreement (CEPA) , there are two things: one is the value addition norms and the second is reduction (of customs duties).
• India-UAE CEPA allows unlimited imports of gold, silver, platinum, and diamonds from the UAE into India with zero tariffs in the coming years.

o This will lead to significant annual revenue losses, move import business from banks to a few private traders, and replace top suppliers with Dubai-based firms.

India-UAE Comprehensive Economic Partnership Agreement (CEPA):

• Both countries signed the CEPA in February 2022 and a Local Currency Settlement (LCS) System in July 2023 to promote the use of Indian Rupee and AED (United Arab Emirates Dirham) for cross-border transactions.
• The CEPA came into force from May 1, 2022.
• The trade pact provides for numerous benefits, including the elimination and reduction of tariffs, fostering an open trade environment, and enhances market access for service providers across various sectors.

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6. PROKARYOTES (Syllabus: GS Paper 3 – Sci and Tech)

Context: Scientists have discovered that prokaryotes are exceptionally resilient to climate change and may increasingly dominate marine environments as a result. This finding highlights their adaptability and potential impact on ocean ecosystems.

Prokaryotes

• Definition: These are organisms that lack a true nucleus and membrane-bound organelles.
• Genetic Material: Typically a circular DNA molecule, is present in the cytoplasm without being enclosed within a nuclear membrane.
• Types: Bacteria and archaea.
• Features of Prokaryotic Cells:

o Shape: They come in various shapes and sizes (0.5-5 µm), with four basic shapes being rod-like (bacillus), spherical (coccus), comma-shaped (vibrio), and spiral (spirillum).

o Cell Organisation: Prokaryotic cells have a basic structural organisation, which includes a cell wall (except in mycoplasma), cytoplasm, and a plasma membrane. However, they lack a well-defined nucleus.

o Organelles: They lack membrane-bound organelles, except for ribosomes. They do have unique structures called mesosomes, which are extensions of the plasma membrane used for various functions.

o Reproduction: Prokaryotic cells reproduce primarily through binary fission, a type of asexual reproduction.

o DNA: Most prokaryotic cells have a single chromosome, which carries hereditary genes in the form of DNA.

• Eukaryote: Any cell or organism that possesses a clearly defined nucleus.

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7. EOS-08 SATELLITE (Syllabus: GS Paper 3 – Sci and Tech)

Context: The smallest launch vehicle of the Indian Space Research Organisation (ISRO) SSLV (Small Satellite Launch Vehicle) in its third and final developmental flight placed the EOS-08 and SR-0 satellites into a precise 475-km circular orbit.

EOS-08

• About: A pioneering satellite mission using ISRO’s Microsat/IMS-1 bus, featuring advanced IR observation payloads, a GNSS-R Payload, and a SiC UV dosimeter.
• Advanced Systems: Equipped with a suite of technologies including an Integrated Avionics system (CBSP Package), Structural panel with PCB, embedded battery, Micro-DGA, M-PAA, Flexible solar panel, and Nano star sensor for technology demonstration.
• Payloads:

o EOIR Payload: Images in Mid-Wave IR (MIR) and Long-Wave IR (LWIR) bands for surveillance, disaster monitoring, environmental monitoring, fire detection, volcanic activity, and industrial disaster assessment.

o GNSS-R Payload: Demonstrates GNSS-R-based remote sensing for applications like ocean surface winds, soil moisture, cryosphere studies, flood detection, and inland water body detection.

o SiC UV Dosimeter: Monitors UV irradiance at the Gaganyaan Mission’s Crew Module view port and serves as a high-dose UV radiation alarm sensor.

• Orbit and Life: Operates in Circular Low Earth Orbit (LEO) at 475 km altitude with a 37.4° inclination, and has a mission life of 1 year.
• Additional Payload: Includes SR-0 DEMOSAT developed by Space Kidz India, also placed in the intended orbit.

SSLV

• About: It is a three-stage launch vehicle composed of three solid propulsion stages and a liquid propulsion-based Velocity Trimming Module (VTM) as its terminal stage.
• Capabilities: It is designed to launch mini, micro, or nanosatellites weighing between 10 to 500 kg into a 500 km planar orbit.
• Solid and Liquid Propulsion: The vehicle uses solid propulsion for the initial stages and a liquid propulsion system for the final Velocity Trimming Module.
• Target Orbits: SSLV effectively places satellites into low Earth orbit, specifically targeting a 500 km planar orbit.

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8. GENEVA CONVENTIONS (Syllabus: GS Paper 2 – IR)

Context: August marks the 75th anniversary of the adoption of the Geneva Conventions in 1949, commemorating a milestone in international humanitarian law.

Geneva Conventions

• About: It consist of four treaties with over 400 articles detailing the treatment of prisoners, protection for medical staff, humanitarian aid, and prohibition of torture, rape, and sexual violence.
• Formalization Date: The Conventions were formalized in 1949 by the United Nations.
• Protocols: There are three additional protocols: the first two were formalized in 1977, and the third in 2005.
• Focus: The Conventions focus on the treatment of non-combatants and prisoners of war, not on the use of conventional or biological and chemical weapons, which are covered by The Hague Conventions and the Geneva Protocol.
• Signatories and Ratification: The Geneva Conventions have been ratified by 196 states, including all UN member states.
• List of Conventions:

o The First Geneva Convention: Protects wounded and sick soldiers on land during war, and applies to medical and religious personnel, medical units, and medical transports.

o The Second Geneva Convention: Protects wounded, sick, and shipwrecked military personnel at sea during war, replacing the Hague Convention of 1907 related to maritime warfare.

o The Third Geneva Convention: Applies to prisoners of war, establishing that they should be released and repatriated without delay after active hostilities cease.

o The Fourth Geneva Convention: Protects civilians, including those in occupied territories, and addresses the general protection of populations against certain consequences of war without covering the conduct of hostilities.

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9. BIOSURFACTANTS (Syllabus: GS Paper 3 – Sci and Tech)

Context: Recent research highlights the potential of biosurfactants to transform the food industry, focusing on their benefits and applications.

Biosurfactants

• About: These  are active compounds that are produced at the microbial cell surface or excreted, and reduce surface and interfacial tension.
• Substitute: They serve as a healthier substitute for synthetic surfactants in the food industry.
• Green Substrates: Produced using green substrates from agro-industrial waste.
• Physical Characteristics:

o Performance and Stability: Microbial biosurfactants exhibit high emulsification, solubilization, foaming, adsorption, and other physical characteristics, and are stable in a wide range of pH, temperature, and salinity.

o Non-Toxic and Safe: Biosurfactants are eco-friendly biomolecules that do not impart toxic effects and are considered safe for human consumption.

Research Findings

• The study highlights the need for more research on toxicity, dose effects, and interactions with other food components for regulatory approvals.
• Cost-effective biosurfactants derived from agro-industrial waste offer a sustainable and healthier alternative to synthetic surfactants.
• They help emulsify fats, improve shelf life, act as dispersing agents, retain moisture, remove heavy metals from vegetables, boost immunity in fish, and serve as natural antioxidants.

Surfactants

• About: These are molecules that slither across surfaces of oil and water, water and oil, or air and water to form an emulsion. 
• Uses: Surfactants are very useful in the food industry as lubricants and foamers to emulsify fats in batters, improve shelf life, as dispersing agents, and retain moisture.

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10. MERCURY POLLUTION (Syllabus: GS Paper 3 – Env and Eco)

Context: A recent study warns that the thawing Arctic permafrost is releasing large amounts of toxic mercury into the environment, posing serious global health risks to both flora and fauna.

Mercury Pollution

• About: It is a naturally occurring element found in air, water, and soil.
• Exposure: Even small amounts of mercury exposure can cause serious health issues, particularly affecting the development of children in utero and early life.
• Toxic Effects: Mercury can have toxic effects on the nervous, digestive, and immune systems, as well as on the lungs, kidneys, skin, and eyes.
• WHO Classification of Mercury: It considers mercury one of the top ten chemicals or groups of chemicals of major public health concern.
• Global Contaminant: Mercury is a global environmental contaminant from both natural sources and human activities, with much of the Arctic contamination originating from outside the region through air and ocean pathways.
• Minamata Disease: People are mainly exposed to methylmercury, an organic compound, through eating fish and shellfish, making them more vulnerable to Minamata disease.
• Release and Redistribution of Mercury: Significant amounts of total mercury (THg) are released from permafrost during glacial erosion, with some of it being redeposited by rivers.
• Minamata Disease: Caused by methylmercury poisoning, was first identified in the inhabitants of Minamata Bay, Japan, characterized by sensory loss, tremors, and hearing and visual loss.
• The Minamata Convention: It is a global treaty aimed at protecting human health and the environment from mercury and its compounds.

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