Henley Passport Index 2025

Introduction

  • The Henley Passport Index ranks the world’s most powerful passports based on visafree travel.
  • The 2025 rankings feature notable shifts in positions across several countries.

Why in news?

  • The United States has fallen out of the top 10 for the first time in nearly two decades.
  • India’s ranking has declined from 80th to 85th.
  • The United Kingdom has dropped from 6th to 8th.
  • China has made substantial gains, rising to 64th from its earlier low standing.

Background

  • The United States topped the index in 2014, but subsequent policy changes have reduced its ranking.
  • The United Kingdom was ranked first in 2015 but has since slipped to 8th in 2025.
  • China has advanced from 94th in 2015 to 64th in 2025, adding 37 more visafree destinations.
  • India had reached the 77th position earlier in 2025 before dropping to 85th.

Significance

  • The decline of the US passport reflects shifting global mobility and soft power dynamics.
  • The changes underscore the growing importance of openness and international cooperation in visa policies.

Facts/General knowledge

  • Top passports:
  • Singapore: visafree access to 193 destinations.
  • South Korea: 190 destinations.
  • Japan: 189 destinations.
  • United States:

Now ranks outside the top 10.

  • Tied with Malaysia at 180 destinations.
  • Contributing factors include:

 

  • China expanding visa exemptions for European nations while excluding the US.
  • Policy changes in Papua New Guinea and Myanmar.
  • New eVisa systems and visa policies in countries such as Somalia and Vietnam.
  • United Kingdom: Fell from 6th to 8th, marking its lowest position since topping in 2015.
  • China: Climbed to 64th, gaining visafree access to 37 additional destinations since 2015.
  • India: Ranked 85th with visafree access to 57 countries.
  • Additional rankings: Germany, Italy, Luxembourg, Spain, Switzerland: 188 destinations.
  • Austria, Belgium, Denmark, Finland, France, Ireland, Netherlands: 187 destinations.
  • Greece, Hungary, New Zealand, and others: between 186 and 184 destinations.

Nobel Prize 2025 – Peripheral Immune Tolerance

Introduction

Why in news?

  • The 2025 Nobel announcement highlights how their work explains the body’s protection against selfattack through mechanisms of peripheral tolerance.

Background

  • The immune system protects the body from harmful pathogens such as viruses, bacteria, and fungi.
  • It must also avoid attacking the body’s own cells to maintain healthy function.
  • The immune system employs two types of tolerance: central tolerance and peripheral tolerance.
  • Central tolerance occurs in the thymus, which produces and trains T cells (a type of white blood cell).
  • The thymus removes selfreactive T cells, but the process is imperfect and some escape into the body’s circulation and tissues (the periphery).
  • Peripheral tolerance provides additional control to stop escaped selfreactive T cells from attacking the body.
  • Regulatory T cells (Treg cells), discovered by Shimon Sakaguchi, play a key role by identifying selfreactive T cells and preventing them from damaging tissues, acting like a security guard.

Significance

  • Their discoveries clarify how the body balances defence against pathogens while preventing attacks on its own tissues.
  • They show the central role of Treg cells in restraining overactive immune responses in the periphery.
  • They establish that the FOXP3 gene governs the development and function of Treg cells, and that its disruption leads to the immune system targeting the body’s own tissues.

Facts/General knowledge

  • The thymus is a small gland in the lymphatic system that produces and trains T cells.
  • Some selfreactive T cells escape central tolerance and enter the periphery (the body’s circulation and tissues).
  • Regulatory T cells (Treg cells) patrol the periphery to restrain selfreactive T cells.
  • Mary E. Brunkow and Fred Ramsdell discovered the FOXP3 gene, which controls Treg cell development and function.
  • Mutation in the FOXP3 gene prevents proper formation of Treg cells and causes a rare autoimmune disease called IPEX.

Nobel Prize in Physics 2025 — Macroscopic Quantum Tunnelling in Superconducting Circuits

Introduction

  • Discovery: Macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.
  • Impact: Paved the way for superconducting circuits that could form the backbone of practical quantum computers and sensors, marking a major milestone in quantum technology.

Why in news?

  • The Royal Swedish Academy of Sciences has awarded the 2025 Nobel Prize in Physics to John Clarke, Michel Devoret, and John Martinis for this discovery.

Background

  • Extension of quantum effects: Demonstrated that macroscopic systems, such as superconducting circuits, can exhibit quantum behaviours like tunnelling and energy quantisation.
  • Experimental realisation: Employed superconducting materials to create a Josephson junction (superconducting system), where billions of Cooper pairs acted as a collective quantum object.
  • Key observation: When cooled to near absolute zero, the system’s electrical state could tunnel through energy barriers, showing abrupt transitions that confirmed quantum behaviour over classical expectations.

Significance

  • Quantum computing: Enabled the development of superconducting qubits and advanced quantum sensing and simulation.
  • Cryptography implications: Quantum computers could break encryption systems that rely on classical computation limits.
  • Global relevance: Countries, including India, are investing heavily in quantum technology; India’s National Quantum Computing Mission aims to develop functional quantum computers by 2031.

Facts/General knowledge

What is quantum tunnelling?

  • Phenomenon where particles pass through barriers that would be impassable under classical physics.
  • Arises from wave–particle duality: the particle’s wave function extends beyond a barrier, creating a probability of appearing on the other side.
  • Applications of quantum tunnelling:

Scanning Tunnelling Microscope (STM): Maps surfaces at the atomic level.

  • Flash memory: Uses electrons tunnelling onto or off floatinggate transistors in USB drives and SSDs.
  • Josephson junctions: Two superconductors separated by a thin insulator, allowing electron tunnelling and precise current–voltage relationships.
  • Uses of Josephson junctions: Superconducting quantum computers and Superconducting Quantum Interference Devices (SQUIDs) for ultrasensitive measurements.
  • Quantum computing: Enables qubits to exist in multiple states and transition between them, essential for specific algorithms.
  • Nuclear fusion: Allows atomic nuclei to overcome repulsive forces and fuse in stars and experimental reactors.
  • Understanding quantum tunnelling (analogy):

Classical view: A ball without enough energy rolls back and cannot cross a hill.

  • Quantum view: There is a small probability the ball appears on the other side, as if it “tunnelled” through.
  • What’s really happening?
  • Particles act as both particles and waves.
  • When a wave meets a barrier, part of it can “leak” through if the barrier is thin or low enough.
  • This leakage creates a probability of the particle being found on the far side without “climbing over” the barrier.

Nobel Prize in Chemistry 2025 — Metal–Organic Frameworks (MOFs)

Introduction

  • The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Chemistry 2025 to Susumu Kitagawa (Japan), Richard Robson (Australia), and Omar Yaghi (US) for their groundbreaking work in creating Metal–Organic Frameworks (MOFs).
  • MOFs are a class of crystalline materials made by linking metal ions with organic molecules, forming porous, spongelike structures with tiny, wellorganised pores that can trap, store, or filter gases and chemicals.

Why in news?

  • The decision recognises the creation of MOFs and the foundational advances that enabled their design and application.

Background

  • Richard Robson: Designed 3D structures by combining metal ions (like copper) with organic molecules to form strong, interconnected frameworks.
  • Demonstrated materials with large internal spaces capable of trapping molecules, laying the groundwork for porous materials.
  • Susumu Kitagawa:
  • Built on Robson’s work to show that porous structures could remain stable.
  • Discovered that these structures could expand and contract based on surrounding gases or chemicals, enabling gas capture (e.g., carbon dioxide) and energy storage.
  • Omar Yaghi: Coined the term Metal–Organic Frameworks (MOFs) for these porous structures.
  • Developed reticular chemistry, a systematic approach to assembling metal ions and organic molecules into large, ordered structures.
  • Demonstrated that MOFs could be rationally designed for new properties.

Significance

  • Water harvesting: MOFs can extract water from desert air.
  • Carbon capture: Certain MOFs can selectively attract and store carbon dioxide, helping combat climate change.
  • Storage of toxic gases: MOFs can safely trap harmful chemicals for later use or disposal.
  • Customdesigned chemical processes: MOFs can be engineered for specific chemical reactions or storage needs, thanks to their highly customisable structures.

Facts/General knowledge

  • Indian Nobel Laureate in Chemistry: In 2009, Venkatraman Ramakrishnan (India), along with Thomas A. Steitz (US) and Ada E. Yonath (Israel), was jointly awarded the Nobel Prize in Chemistry "for studies of the structure and function of the ribosome."

Nobel Prize in Literature 2025 – László Krasznahorkai

Introduction

  • László Krasznahorkai is a Hungarian novelist and screenwriter known for difficult, demanding novels often described as postmodern, dystopian, and melancholic.

Why in news?

  • The Nobel Prize in Literature for 2025 is awarded to the Hungarian author László Krasznahorkai, for his compelling and visionary oeuvre that, in the midst of apocalyptic terror, reaffirms the power of art.

Background

  • Famous works: Satantango; The Melancholy of Resistance; War & War; Seiobo There Below; The Last Wolf; The World Goes On.
  • Major achievements and awards: Winner of the Man Booker International Prize 2015; shortlisted for the Man Booker International Prize 2018 (The World Goes On).
  • Literary recognition: Praised for labyrinthine prose, singlesentence paragraphs, and philosophical depth.

Significance

  • His works explore apocalyptic visions, human delusion, moral collapse, and the interplay of despair and beauty.
  • The Melancholy of Resistance was described by 2015 Man Booker judges as a “satirical and prophetic vision of Western Civilisation.”

Facts/General knowledge

  • India’s celebrated novelist Amitav Ghosh was among the contenders for the 2025 Nobel Prize in Literature.
  • Amitav Ghosh, born in Kolkata in 1956, is the winner of the Jnanpith Award, India’s highest literary honour, and one of the country’s leading contemporary writers.
  • Rabindranath Tagore was awarded the Nobel Prize in Literature 1913 for his profoundly sensitive, fresh and beautiful verse, which he expressed in his own English words and made a part of the literature of the West.
  • Notable literary contributions by Rabindranath Tagore: Manasi; Gitanjali; Sâdhanâ: The Realisation of Life; Chitra: a Play in One Act.

Nobel Peace Prize 2025 – María Corina Machado

Introduction

  • María Corina Machado is a Venezuelan politician and prodemocracy activist, widely known as the “Iron Lady of Venezuela” for her courageous stand against authoritarianism.
  • She has championed democratic rights and a peaceful transition from dictatorship to democracy in Venezuela.

Why in news?

  • The Norwegian Nobel Committee has awarded the Nobel Peace Prize 2025 to María Corina Machado for her tireless efforts to promote democratic rights and a just, peaceful transition in Venezuela.

Background

  • Since 1999, Venezuela has shifted from a relatively stable democracy to a deeply entrenched authoritarian state, with citizens facing poverty and limited freedoms while the opposition operates under constant threats.
  • Contributions by María Corina Machado:
  • Founded the Atenea Foundation in 1992 to support street children.
  • Cofounded Súmate to monitor elections and promote free and fair voting.
  • Mobilised citizens and opposition groups by advocating “ballots over bullets,” encouraging peaceful civic participation over violent resistance.
  • Remained in Venezuela under threats, working to unify the prodemocracy movement and stand firmly against authoritarian rule.

Significance

  • The 2025 award highlights that democracy is the foundation of peace, both within countries and internationally.

Facts/General knowledge

  • India has two Nobel Peace Prize laureates:
  • Mother Teresa (1979): Awarded for her work for bringing help to suffering humanity.
  • Kailash Satyarthi (2014): Shared the prize with Malala Yousafzai for work against the suppression of children and for the right of all children to education; founded the Bachpan Bachao Andolan (Save the Childhood Movement).
  • Nobel Peace Prize: Awarded since 1901 to individuals or organisations promoting fraternity between nations, reducing standing armies, or advancing peace.
  • Initially recognised pioneers of the peace movement, later shifting to politicians, diplomats, and humanitarian work.
  • Since World War II, the focus has been on arms control, peace negotiation, democracy and human rights, and creating a more peaceful world.
  • In the 21st century, efforts addressing climate change and environmental threats are also considered.

Nobel Prize in Economics 2025

Introduction

  • The 2025 Nobel Prize in Economic Sciences was jointly awarded to Joel Mokyr (Netherlands), Philippe Aghion (Paris), and Peter Howitt (Canada) for explaining innovationdriven economic growth and how societies must counter stagnation to sustain development.

Why in news?

  • Joel Mokyr received onehalf of the prize for identifying prerequisites for sustained growth through technological progress, using historical data to show why sustained technological innovation is vital for continuous economic growth.
  • Philippe Aghion and Peter Howitt shared the other half for developing a mathematical model of “creative destruction,” where new products and technologies replace outdated ones, propelling economic expansion.

Background

  • In 1968, Sweden’s central bank, Sveriges Riksbank, established the Prize in Economic Sciences in Memory of Alfred Nobel on its 300th anniversary, funded through a donation to the Nobel Foundation.
  • Awarded by the Royal Swedish Academy of Sciences, it follows the same principles as the original Nobel Prizes and carries equal monetary value.

Significance

  • The research explains why the past two centuries experienced consistent global economic growth, improving living standards and wellbeing worldwide.
  • It challenges the assumption that growth is automatic, emphasising the fragility of progress and the need to maintain innovationdriven mechanisms.
  • It highlights the importance for regions like Europe to integrate competition with proactive industrial policy, learning from examples like the US and China.
  • It underscores the need for economies to encourage continuous innovation and adaptation for sustained prosperity.

Facts/General knowledge

  • Amartya Sen (1998): Awarded for work on welfare economics, poverty, and human development, emphasising that growth alone is insufficient and development must focus on capabilities, rights, and freedoms.
  • Abhijit Banerjee (2019): Shared the prize with Esther Duflo and Michael Kremer for pioneering experimental approaches to alleviating global poverty, introducing randomised controlled trials to evaluate social and economic interventions.

 

70th Filmfare Awards 2025

Introduction

  • The 70th Hyundai Filmfare Awards 2025 were held on 11 October 2025 at EKA Arena, Ahmedabad, in collaboration with Gujarat Tourism.
  • The ceremony marked a distinguished celebration of excellence in Hindi cinema and seven decades of cinematic excellence.

Why in news?

  • Hosted by Shah Rukh Khan and Karan Johar, who reunited on the Filmfare stage after 18 years.
  • The evening celebrated the best films of 2024, honouring excellence across multiple categories.

Background

  • The ceremony blended glitz and nostalgia in its presentation.
  • It focused on recognising outstanding cinematic achievements from the 2024 film year.

Significance

  • ‘Laapataa Ladies’ emerged as the biggest winner with 13 trophies, including Best Film, equalling the record previously set by ‘Gully Boy’ (2019) starring Ranveer Singh and Alia Bhatt.
  • In the acting categories, Abhishek Bachchan and Kartik Aaryan shared the Best Actor (Male) award for their performances, while Alia Bhatt won Best Actress.
  • Lifetime Achievement Awards were conferred on Zeenat Aman and Shyam Benegal (posthumously), honouring unparalleled contributions to Indian cinema.

Facts/General knowledge

  • Best Director: Kiran Rao – ‘Laapataa Ladies’
  • Critics’ Award for Best Film: Shoojit Sircar – ‘I Want To Talk’
  • Best Screenplay and Best Dialogue: Sneha Desai – ‘Laapataa Ladies’
  • Best Music Album and Best Background Score: Ram Sampath – ‘Laapataa Ladies’
  • RD Burman Award (Upcoming Talent in Music): Achint Thakkar – ‘Jigra’, ‘Mr & Mrs Mahi’
  • Lifetime Achievement Award: Zeenat Aman; Shyam Benegal (Posthumously) – Honoured for unparalleled contributions to Indian cinema

Global Firepower Index 2025

Introduction

  • Ranks countries by military strength, defence capabilities, and global influence.
  • Assesses overall power using a composite index (PwrIndx).

Why in news?

  • The 2025 rankings identify the top 10 most powerful militaries based on strength, technology, manpower, and defence spending.

Background

  • Compiled annually to compare nations’ military readiness and strategic strength.
  • Considers more than 60 factors, including manpower, equipment, technology, and defence budgets.

Significance

  • Provides a clear picture of how nations compare in military readiness and strategic strength.
  • Shows how countries are modernising and reshaping global military power.

Facts/General knowledge

  • United States — PwrIndx: 0.0744
  • Russia — PwrIndx: 0.0788
  • China — PwrIndx: 0.0788
  • India — PwrIndx: 0.1184
  • South Korea — PwrIndx: 0.1656
  • United Kingdom — PwrIndx: 0.1785
  • France — PwrIndx: 0.1878
  • Japan — PwrIndx: 0.1839
  • Turkey — PwrIndx: 0.1902
  • Italy — PwrIndx: 0.2164