About Trinidad and Tobago:

• It is an island country of the southeastern West Indies.
• It is the 5^th largest island country in the West Indies and the most industrialised and prosperous nation in the Caribbean.
• Forming the two southernmost links in the Caribbean chain, it lies close to the continent of South America, northeast of Venezuela and northwest of Guyana.
• It consists of two main islands—Trinidad and Tobago—and several smaller islands.
• Trinidad – the larger of the two islands, is crisscrossed by mountain ranges; the most dominant of these is the Northern Range, which is a continuation of the Andes
  • It comprises beautiful waterfalls such as the famous 91-metre-high Blue Basin and Maracas Falls.
• The country is home to the Pitch Lake, one of the world’s largest natural asphalt deposits.
• It achieved independence from the United Kingdom in 1962 and obtained membership in the Commonwealth and the United Nations that same year.
• It became a republic in 1976.
• The capital is Port of Spain, located on the northwestern coast of Trinidad.
• Language:
  • Although English is the official language, most people speak Trinidad English, a creole language.
  • A few people, mostly in rural areas, speak a French-derived creole, Spanish, or Caribbean Hindustani (a dialect of Hindi).

About Rainbow Clouds:

• A rainbow cloud can occur because of something called cloud iridescence.
• Cloud iridescence occurs when sunlight is diffracted by extremely small water droplets or tiny ice crystals suspended in clouds.
• Diffraction happens when light bends and spreads after encountering particles similar in size to the wavelength of visible light.
• This process separates sunlight into multiple colours, creating the striking pastel shades and rainbow-like patterns seen across the clouds.
• They form most clearly when cloud particles are unusually small and relatively uniform in size.
• Why is the Phenomenon Relatively Rare?
  • Cloud iridescence does not appear frequently because several atmospheric conditions must align at the same time.
  • The clouds need to be thin enough for sunlight to pass through while also containing droplets or ice crystals that are nearly identical in size.
  • Even small differences between particles can weaken the colours or prevent the phenomenon from appearing altogether.
  • The position of the Sun and the observer’s viewing angle are extremely important.
• Which Clouds Can Produce Iridescence?
  • Newly forming clouds and semi-transparent clouds are more likely to produce vivid iridescence because their particles tend to be more uniform.
  • It is commonly seen in altocumulus, cirrocumulus, cirrus, and lenticular clouds.
  • Lenticular clouds are especially known for dramatic iridescent displays because their smooth shape and stable airflow often allow highly uniform droplets to form.
  • These clouds typically develop at high altitudes where atmospheric conditions remain relatively stable, making it easier for sunlight to interact consistently with suspended particles.

The Difference Between Rainbow Clouds and Real Rainbows:

• Despite the popular nickname, rainbow clouds are not technically rainbows.
• Traditional rainbows form when sunlight is refracted, reflected, and dispersed inside raindrops after rainfall.
• Cloud iridescence, on the other hand, is mainly caused by diffraction and interference involving microscopic droplets or ice crystals.
• Iridescent clouds usually appear much closer to the Sun and often produce softer, less structured colour patterns than ordinary rainbows.
• Instead of forming a large arc across the sky, the colours spread unevenly across sections of cloud.

About Labeo kaage:

• It is a new species of freshwater fish.
• It was discovered from the Shivanasamudra stretch of the Cauvery River basin in Mandya, Karnataka.
• The name kaage, derived from the Kannada word for crow, refers to the fish's dark body colour.
• Locally, it is known as ‘kaage meenu' in Karnataka.
• It is the latest in a series of dark-coloured Labeo species discovered in the Western Ghats.
• Recent Findings:
  • During 2025, the same team also discovered Labeo chekida from the Chalakkudy River and Labeo uru from the Chandragiri River of Kerala.
  • While Labeo chekida is locally known as ‘kaka chekida', Labeo uru was named after the traditional wooden dhow (uru) of the Malabar coast due to its elongated sail-like fins.
  • The scientists also clarified the identity of Labeo nigrescens, the enigmatic ‘Dark Labeo' originally described in 1870, resolving a long-standing taxonomic confusion surrounding the group.

About Fjord:

• A fjord is a long, narrow, deep body of water that stretches far inland from the coast.
• A fjord was formed when a glacier made a U-shaped valley by segregation through several ice ages .
• The valley was then filled with water from the sea once the glaciers melted.
• The opening toward the sea is called the mouth of the fjord, and is often shallow.
• The fjords can be long and quite deep and often surrounded by high mountains.
• Typically, fjords reach their greatest depths farther inland, where the force of the glacier that formed them was the most potent.
• Many fjords are actually deeper than the sea that feeds into it.
• Some features of fjords include coral reefs and rocky islands called skerries.
• Epishelf Lakes:
  • Another feature of some fjords is the presence of epishelf lakes. These lakes occur when melted fresh water becomes trapped under a floating ice shelf.
  • This freshwater does not mix with the saltwater below, but rather floats on top of it.
• Fjords are found mainly in Norway, Chile, New Zealand, Canada, Greenland, and the U.S. state of Alaska.
  • Sognefjorden, a fjord in Norway, is more than 160 kilometers (nearly 100 miles) long.

About Dhow:

• A dhow is a traditional wooden sailing vessel used mainly in the Indian Ocean, Arabian Sea, and along the coasts of East Africa and the Middle East.
• A dhow has a long, narrow hull and is propelled only by its sail.
• Historians aren't sure who invented the dhow — Indians or Arabs — but they do know the first ones appeared before 600 C.E.
• The dhow has been a central part of maritime trade, fishing, and culture for countries like Oman, Yemen, India, and coastal regions of East Africa.
• Today the term generally refers to all sailing ships in that region with one or two masts and triangular or quadrilateral-shaped sails.
• Bows are sharp, with a forward and upward thrust, and the sterns of the larger dhows may be windowed and decorated.

Key Facts about Beypore Uru:

• It is a wooden dhow handcrafted by skilled artisans and carpenters in Beypore town, Kozhikode district, Kerala.
• Beypore urus are purely made of wood, without using any modern techniques, and traditional methods are used to launch these ships into the water.
• The carpenters manually join each piece of wood to build the large boat.
• Uru making in Beypore is a centuries-old tradition that was established since India began its maritime trade with Mesopotamia.
• Arab traders were among the first major patrons of these vessels.
• Usually an Uru is built by a team of fifty men over a period of at least four years.
• No blueprints are made and the entire aspect of shipbuilding is embedded in the minds of the highly skilled shipwrights.
• Khalasis are a group of people traditionally involved in the construction of Urus.

About Odonata Species:

• Odonata, popularly known as dragonflies and damselflies are primarily associated with wetlands and surrounding landscape.
• The order Odonata is one of the ancient groups of insects.
• Odonata is an insect order consisting of three groups: Anisoptera (which includes dragonflies), Zygoptera (which includes damselflies), and Anisozygoptera (a relict group represented by only two living species).
• Habitat: They are found in a variety of habitats, such as freshwater environments like ponds, rivers, and lakes.
• Distribution:
  • They are globally distributed, from the tropics, where they are most numerous and varied, to the boreal forests of Siberia and North America.
  • They are also found throughout the Southern Hemisphere, with the exception of Antarctica.
• Features:
  • Behaviour: Large, active by day, and often strikingly coloured, they are usually seen flying near water.
  • Diet: Adult odonates are voracious predators, as are the aquatic larvae.

About ICGS Achal:

• The Indian Coast Guard Ship (ICGS) Achal is the new-generation Adamya-class Fast Patrol Vessel (FPV).
• It is named Achal, meaning firm.
• It is the fifth one in a series of eight FPVs being constructed by Goa Shipyard Ltd (GSL) for the coast guard.
• Features:
  • Propulsion: It is powered by two 3000 kW advanced diesel engines,
  • Speed: The vessel delivers a top speed of 27 knots and an operational endurance of 1500 nautical miles.
  • It has a suite of integrated technologies, including an Integrated Bridge System, Integrated Machinery Control System, and Automated Power Management System.
  • It has 60% indigenous content, dual-class certification (ABS & IRS).
• Functions: It will undertake a wide range of missions, including surveillance, interdiction, Search and Rescue (SAR), anti-smuggling operations, and pollution response.
• The ship will be stationed at Vadinar, Gujarat, operating under the administrative and operational control of the Commander, Coast Guard Region (North West).

About International Organisation for Standardisation:

• It is an international nongovernmental organization established in 1947 and made up of national standards bodies.
• It is made up of members from the national standards bodies of 177 countries.
• Headquarters: Geneva, Switzerland.
• Functions of ISO:
  • The ISO plays a role in facilitating world trade by providing common standards of safety, reliability, and quality.
  • It develops and publishes standards for a vast range of products, materials, and processes. 
  • It publishes technical reports, technical specifications, publicly available specifications, technical corrigenda, and guides.
• Governance of International Organisation for Standardisation:
  • General Assembly: It is the overarching organ and ultimate authority of the organization.
  • ISO Council: It is the core governance body of the organization and reports to the General Assembly. It meets three times a year and is made up of 21 member bodies
  • Technical Management Board : The management of the technical work is taken care of by the Technical Management Board, which reports to Council.

About National Panchayat Awards:

• It is awarded by the Ministry of Panchayati Raj annually to recognize and incentivize best-performing Panchayats.
• Background: These awards have been revamped and launched during the year 2022 aligning them with 9 Localization of Sustainable Development Goals (LSDGs) themes aggregating 17 SDGs.
• Objective: To assess the performance of Panchayats in attainment of SDGs, promote competitive spirit among them and catalyze the process of LSDGs through Panchayati Raj Institutions for attaining LSDGs by 2030.
• The awards are given under the Incentivization of Panchayats (IoP) scheme, a central component of the Centrally Sponsored Scheme of Rashtriya Gram Swaraj Abhiyan (RGSA).
• All the Panchayats are ranked based on their performance under each of the following 9 LSGD themes :
  • Poverty free and enhanced livelihoods Panchayat
  • Healthy Panchayat
  • Child Friendly Panchayat
  • Water Sufficient Panchayat
  • Clean and Green Panchayat
  • Self-sufficient infrastructure in Panchayat
  • Socially Just and Socially secured Panchayat
  • Panchayat with Good Governance
  • Women-Friendly Panchayat
• The awards are conferred under two distinct categories.
  • Deen Dayal Upadhyay Panchayat Satat Vikas Puraskar (DDUPSVP): Recognises outstanding Gram Panchayats for their performance across 9 LSDGs themes.
  • Nanaji Deshmukh Sarvottam Panchayat Satat Vikas Puraskar (NDSPSVP): It is conferred to the best-performing Panchayats at the District, Block, and Gram Panchayat levels on an overall basis.