Daily Current Affairs

September 20, 2025

Current Affairs

Mars Rover Perseverance discovers Potential Biosignature in Mars 

Context: NASA’s Mars rover Perseverance (exploring the Martian surface since 2021) has found the strongest signs yet that some form of life may have existed on Mars in the past.

Relevance of the Topic: Prelims: NASA’s Mars rover Perseverance findings; NASA’s Perseverance Mission.

image 54

Perseverance’s Finding:

  • NASA's Perseverance rover discovered leopard spots on a reddish rock nicknamed “Cheyava Falls” in Mars' Jezero Crater in 2024.
  • The rock was found to contain clay and silt, which are known on Earth to preserve microbial life effectively.
  • The analysis also revealed the presence of organic carbon, sulphur, oxidised iron (rust), and phosphorus.
  • These minerals could have formed through biological activity but may also have resulted from purely chemical, non-biological processes.
  • The rock sample has been described as containing a “potential biosignature”, but not yet confirmed as evidence of life.

What are Biosignatures?

  • Biosignatures are objects, structures, or chemical compositions that may have a biological origin. They indicate the possible presence or activity of living organisms, either in the past or present.
  • A biosignature is any substance such as an element, isotope, or molecule or phenomenon that provides scientific evidence of past or present life.

Significance of the Finding

  • This is the closest NASA has ever come to detecting signs of life on Mars.
  • The discovery has the potential to revolutionise our understanding of Mars’s history and its capacity to host life.
  • The clay-rich nature of the sample is particularly important, as clay is known to be an excellent preserver of microbial signatures on Earth.

However, the finding does not conclusively prove the existence of life on Mars. The structures and chemical compositions detected could also be explained by non-living (abiotic) processes.

NASA’s Perseverance Mission (Mars 2020 Mission)

  • Launched: 2020. Landed in Mars: Feb 2021 
  • Rover: NASA’s 4th generation Mars Rover. It is the most advanced, most expensive & most sophisticated mobile laboratory sent to Mars till date. It is different from previous missions as it can drill & collect core samples of most promising rocks & soils. The rover landed at Jezero Crater - an ancient river delta that has rocks and minerals that could only form in water.
  • Ingenuity Helicopter: Autonomous helicopter that operated on Mars till January 2024. Travelled to Mars attached to the belly of the Perseverance rover and was deployed to the surface after landing in Jezero Crater. First aircraft to conduct a powered and controlled extra-terrestrial flight on a planet after Earth. 
  • Objectives:
    • To look for biosignatures in either the chemical measurements or morphological observations, in the dried-up lakebed at Jezero Crater. 
    • To demonstrate technology for future robotic and human exploration. Perseverance will produce oxygen on the Martian surface for the first time, using atmospheric CO2 from the Martian atmosphere.
  • Perseverance will drill and collect rock samples that will be returned to Earth by a subsequent European Space Agency/NASA mission in 2030s. Perseverance carries the Radar Imager for Mars’ Subsurface Experiment (RIMFAX). RIMFAX will provide high resolution mapping of the subsurface structure at the landing site. 
  • Power source: It has a Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) which converts heat from the natural radioactive decay of plutonium (Plutonium Dioxide) into electricity.

PM Mitra Scheme

Context: The Prime Minister of India laid the foundation for the country’s first PM-MITRA Park (PM Mega Integrated Textile Region and Apparel park) in Dhar district of Madhya Pradesh. 

Relevance of the Topic: Prelims: Key facts about PM-MITRA Scheme.

PM-MITRA Park: 

  • The Union Ministry of Textiles has approved setting up seven PM MITRA parks. 
  • These include the parks in: Madhya Pradesh’s Dhar;  Tamil Nadu’s Virudhnagar; Telangana’s Warangal; Gujarat’s Navasari; Karnataka’s Kalaburagi; Uttar Pradesh’s Lucknow, and Maharashtra’s Amravati.

Based on the 5F theme: Farm to Fibre to Factory to Fashion to Foreign, the initiative aims to boost India’s textile manufacturing and exports. 

Note: Vision 2030- The Government is also aiming to achieve an economic value of $250 billion in the production and $100 billion in the export of textiles, apparel and related products by the year 2030.

About the Schemes mentioned in the news:

PM-MITRA Scheme- Mega Integrated Textile Region & Apparel Parks scheme.

The PM MITRA Scheme was announced in the Union Budget 2021-22. The scheme enables the textile industry to become globally competitive, attract large investments, boost employment generation and exports.

DETAILS ABOUT PM MITRA SCHEME Vision:

5F vision- The '5F' Formula encompasses - Farm to fibre; fibre to factory; factory to fashion; fashion to foreign.

Scope: Set up 7 PM Mega Integrated Textile Region and Apparel (PM MITRA) Parks in Greenfield/Brownfield sites in partnership with the willing State Governments.

Nature of Incentives:

Incentives to MITRA Parks: Government to provide capital support of 30% of the project cost in Greenfield/Brownfield parks. The support would lead to creation of Core Infrastructure such as Developed Factory Sites, Plug & Play facility, Incubation Centre, Roads, Power, Water and Wastewater system etc.

Incentives to Industries: Up to 3% of the total sales turnover. This is only available to those manufacturing companies who are not availing benefits under Textile PLI scheme. Operational Model: Public Private Partnership (PPP) model based on Design-Build-Finance-Operate-Transfer (DBFOT) format.

Significance: Reduce Logistics Cost: The logistics cost accounts for 12-14% of the GDP, which is higher in comparison to global benchmarks. The PM MITRA Scheme will reduce logistics cost and strengthen the value chain of the textile sector making it globally competitive.

Why does India not import corn from the US?

Context: The US Commerce Secretary has questioned India for not opening up its market to American Corn. Differences over agricultural trade is at the heart of the trade dispute between India and the US.

Relevance of the Topic: Prelims: India-US Trade dispute: Agriculture Sector 

image 53

Why does India not import corn from the US? 

There are three reasons why India does not buy American Corn:

  • Self-sufficiency in Corn production: India produces around 34-36 million tonnes of corn annually, making it the world’s fifth-largest producer of corn. 
  • Concerns over GM Corn: The US grows more than 90% of its corn from GM seeds. However, India does not permit the cultivation or import of genetically modified food or feed (with the exception of GM cotton). 
  • Protect farmers’ interest:
    • India needs to protect its fragile agricultural sector that employs 500 million people against imports from countries that heavily subsidise their agriculture. Allowing cheaper GM imports would undercut Indian farmers. 
    • Smallholders (backbone of India’s agricultural economy) fear that allowing GM corn would open the gates to multinational corporations controlling seed markets. Dependence on patented seed technology could erode centuries-old practices like seed saving, while also raising questions of consumer safety and environmental impact. 

Reasons the US is exploring alternate markets:

  • China has been a major buyer of US corn, taking nearly a third of America’s exports. After the recent US-China trade war, China has begun to buy corn and soyabeans from Brazil, throwing the US agriculture sector into a crisis.
  • With India’s rising corn consumption (particularly for ethanol-blended petrol programme), the US sees an enormous opportunity to export corn to India. 

Increased demand for corn in India:

  • Traditionally, corn is consumed into poultry feed, starch, and processed foods. 
  • In recent years, a growing share has been diverted toward ethanol production. In the latest cycle, India used 3.5 million tonnes of corn to produce around 1.35 billion litres of ethanol. 
  • With the government pushing for 20% ethanol blending in petrol by 2025-26, annual corn demand for biofuel alone could rise to 6-7 million tonnes.
  • In 2024-25, India imported 0.97 million tonnes of corn (most of which came from Myanmar and Ukraine which export non-GM corn that meets Indian standards). The imports from the US were miniscule (just 1100 tonnes). Thus, there is some scope for corn imports from the US for use in producing ethanol. 

However, importing GM corn even for ethanol production has been firmly rejected, with sugar mills and farmer unions warning it could marginalise sugarcane and disrupt the ethanol-blended petrol programme. 

Also Read: US’s Tariffs: Nature, Impacts, and Lessons for India 

The dispute reflects not just trade imbalances but a deeper clash over farming practices, food security, and agricultural sovereignty.   

India gets licence to explore Indian Ocean for Polymetallic Sulphides

Context: India has bagged a 15-year contract for exploration of polymetallic sulphides in the northwest Indian Ocean from the International Seabed Authority (ISA). 

Relevance of the Topic:Prelims: Key facts about Polymetallic Sulphides; International Seabed Authority; Carlsberg Ridge. 

Licence to explore Indian Ocean for Polymetallic Sulphides: 

  • This is the first licence granted globally for exploring polymetallic sulphur nodules in the Carlsberg Ridge
  • The contract area covers 10,000 sq. km. in parts of the Carlsberg Ridge in the Indian Ocean.

Polymetallic Sulphides Nodules: 

  • PMS nodules are hydrothermal mineral deposits or concentrations of rock found in the deep ocean (mid-ocean ridges and hydrothermal vents). 
  • They form when hot, mineral-rich fluids from the Earth's mantle mix with cold ocean water, resulting in the precipitation of metal sulphides. 
  • These metalliferous muds contain large amounts of copper, zinc, lead, iron, silver and gold. 
image 51

Carlsberg Ridge: 

  • The Carlsberg Ridge is 3,00,000 sq. km. stretch that lies in the Indian Ocean, specifically in the Arabian Sea and northwest Indian Ocean. 
  • It forms the boundary between the Indian and Arabian tectonic plates.
  • The ridge separates the Arabian Sea to the northeast from the Somali Basin to the southwest.
image 52

Key facts about Exploration Process: 

  • For exploration in areas part of the ‘high seas’ or part of the ocean not part of their territories, countries must obtain permission from the International Seabed Authority (ISA).
  • These rights are specifically designated for regions within the open ocean defined as marine expanses encompassing the air above, surface, and seabed; where no nation holds sovereignty claims.
    • Countries have exclusive rights extending up to 200 nautical miles from their borders, including the underlying seabed. 
    • Countries can claim up to 350 nautical miles from their coasts as their continental shelf. Countries in the Bay of Bengal can claim up to 500 nautical miles as per the United Nations Convention on the Laws of the Sea (UNCLOS).
  • If the claim is approved, the country gains priority to explore and potentially exploit both living and non-living resources in the designated region. 

About International Seabed Authority: 

  • Autonomous international organisation established under the 1982 United Nations Convention on the Law of the Sea (UNCLOS). 
  • It is the organisation through which States Parties to UNCLOS organise and control all mineral-resources-related activities in ‘the Area’ for the benefit of humankind as a whole. 
  • The international seabed area represents around 50% of the total area of the world’s oceans.
  • ISA has the mandate to ensure the effective protection of the marine environment from harmful effects that may arise from deep-seabed-related activities. 
  • All States Parties to UNCLOS are members of ISA (including India). 
  • Headquarters: Kingston, Jamaica 

India’s third exploration contract with ISA: 

  • The contract is India’s third exploration contract with the ISA and is its second for PMS.
    • India had exploratory rights from the ISA in the Central Indian Ocean Basin (till 2027). 
    • India had obtained exploratory rights for polymetallic sulphides in the Indian Ocean Ridge (2031).
  • India has become the first ISA Member State to hold two contracts for PMS exploration and to have the largest area allocated in the international seabed area. 

India continues to conduct its exploration activities in areas beyond national jurisdiction strictly within the framework of the UNCLOS and under the mandate of ISA. 

Denial of Land Inheritance Rights to Tribal Women

Context: The Supreme Court’s judgment in Ram Charan vs Sukhram (July 2025) held that excluding daughters from ancestral property violates the fundamental right to equality. This has brought tribal women’s inheritance rights into sharp focus.

Relevance of the Topic: Mains: Issues faced by Women: Land Inheritance Rights 

Land Inheritance Rights of Tribal Women: 

  • Tribals in Scheduled Areas are governed by their customary laws in matters of marriage, succession and adoption. 
  • Despite women contributing more in farms than the men, none of the tribal customary laws prevalent in the Scheduled Five Area States give land inheritance rights to females in ancestral properties. 
  • The consequence is stark landlessness among women. As per the Agriculture Census 2015-16, only 16.7% of Scheduled Tribe women possess land compared to 83.3% of men. 

Reasons for Denial of Land Inheritance Rights to Tribal Women: 

  • Fear of Land Alienation: The belief that if tribal women marry outside their community, inherited land may pass into non-tribal hands.
  • Communitarian Nature of Tribal Land: Tribal land is often perceived as communitarian property, where individual ownership is discouraged, and this argument is used to justify women’s exclusion.

The idea of codifying gender-equal inheritance laws for tribal communities has had a contentious history. The opposing argument is that replacing tribal customs with codified laws would undermine tribal identity. However, it perpetuates systemic gender discrimination and economic marginalisation of women.

Problems with Customary Exclusion: 

  • Denial of land rights undermines women’s economic independence and entrenches cycles of poverty and dependence.
  • It perpetuates patriarchal control over resources and denies women equal status within families and communities.
  • The communitarian ownership argument fails in practice, as proceeds from land sales or acquisitions rarely benefit the village community, instead accruing to male members.
  • Violation of fundamental rights: Denial of inheritance rights violates fundamental rights.
    • Article 14 guarantees equality before law.
    • Article 15 prohibits discrimination on the grounds of sex. 
    • Article 21 guarantee of dignity is compromised when women are deprived of property and economic security.
  • It also contradicts constitutional morality, which demands that customs and traditions must conform to the principles of equality and justice. 

Judicial Interventions: 

  • Madhu Kishwar vs State of Bihar (1996), the SC refrained from striking down tribal succession customs, fearing disruption of settled traditions.
  • Prabha Minz vs Martha Ekka (2022): Jharkhand High Court ruled in favour of Oraon women, and upheld the right of females on inheritance, despite being barred by customary law.
  • Kamala Neti vs Special Land Acquisition Officer (2022): The SC held that a woman belonging to a Scheduled Tribe (ST) is entitled to an equal share in inherited tribal land. The SC urged the Central Government to amend Section 2(2) of the Hindu Succession Act, 1956 which expressly exempts tribal women from the scope of the Act. 
  • Ram Charan case (2025), the SC held that excluding daughters from ancestral property violates the fundamental right to equality.

Way Forward

  • Codify Tribal Succession Act that ensures equal inheritance rights for women while being sensitive to tribal socio-cultural contexts. Codification of succession laws on the lines of Hindu and Christian laws would harmonise customary autonomy with constitutional equality.
  • Greater awareness and sensitisation within tribal communities to counter fears of land alienation and to highlight the role of women as equal stakeholders.
  • Continued judicial scrutiny to ensure that customs failing the test of reasonableness and public policy are struck down.

Empowering tribal women through property rights is essential not only for gender justice but also for achieving inclusive tribal development and social justice.