Environment and ecology 2026 — UPSC GS3 compilation
What is in it: Shishya's UPSC issue explainers and bill and journal summaries tagged environment and ecology, and daily-digest items in the Environment category. The digest items here run from 22 July 2026 to 31 October 2026; months outside that are not covered.
Flex fuel vehicles: the motor vehicle rules now name E85 and E100
The Ministry of Road Transport and Highways has amended the Central Motor Vehicles Rules, 1989 so that emission certification expressly covers E100 alongside E85, to support flex fuel vehicles that can run on high-ethanol fuels.
Background
E85 is a petrol-ethanol blend with up to 85% ethanol by volume; the number after E is the share of ethanol.
A flex fuel vehicle runs on a range of ethanol-petrol blends from one tank, with engine controls adjusting to the fuel; the release names Brazil and the United States as countries already using the technology.
The fuels are only for vehicles designed and certified for them; being fit for E10 or E20 does not make a vehicle fit for E85.
Owners of existing vehicles are not required to switch fuels or modify their vehicles.
Why it matters for the exam
Energy security: more domestic ethanol can reduce dependence on imported crude oil, as the ministry notes.
Environment: the release says emissions benefits depend on the feedstock and production process, which is the right caution to carry into an answer (food-versus-fuel and water use are the usual counterpoints).
Regulation before markets: rules for certification come first, so that vehicles and fuel pumps can follow.
For Prelims revision
E85 = up to 85% ethanol by volume; E100 = fuel consisting predominantly of ethanol.
Amended: Central Motor Vehicles Rules, 1989 (Ministry of Road Transport and Highways).
Mains practice
Flex fuel vehicles can help India cut crude oil imports. Discuss the conditions under which high-ethanol fuels actually lower emissions. (Practice question by Shishya, 150 words)
Syllabus line (General Studies-III): “Infrastructure: Energy, Ports, Roads, Airports, Railways etc.” — UPSC CSE 2026 notice, read 27 Oct 2026.
Ramsar sites: India now has 103 wetlands of international importance
A PIB backgrounder says India's list of Ramsar sites has grown from 26 in 2014 to 103, covering over 13.87 lakh hectares across 28 States and Union Territories. By number of sites, it places India first in Asia and third in the world.
Background
The Ramsar Convention was adopted at Ramsar, Iran, on 2 February 1971 and came into force in 1975; India became a Party on 1 February 1982.
The backgrounder gives the Convention's size as 172 Contracting Parties and over 2,536 Ramsar sites worldwide (as on October 2026).
Its three pillars: wise use of all wetlands, designation and management of Ramsar sites, and international cooperation.
A wetland must meet at least one of nine criteria; for example, regularly supporting 20,000 or more waterbirds (Criterion 5).
In India the State or UT identifies the wetland, and the Ministry of Environment, Forest and Climate Change forwards the proposal to the Ramsar Secretariat. The domestic legal base is the Wetlands (Conservation and Management) Rules, 2017.
Why it matters for the exam
Prelims staple: dates of the Convention, India's joining date, the criteria and the count of sites change slowly and are asked often.
Mains angle: designation is not protection. A listed wetland still needs a management plan, a catchment that is not encroached and local participation.
Link with disaster management: wetlands buffer floods and recharge groundwater, which ties this topic to urban flooding questions.
For Prelims revision
India's Ramsar sites: 103 (from 26 in 2014), over 13.87 lakh hectares, 28 States/UTs.
Ramsar Convention: adopted 2 February 1971 at Ramsar, Iran; in force 1975; India a Party since 1 February 1982.
Nine criteria; Criterion 5 = regularly supports 20,000 or more waterbirds.
Mains practice
The number of Ramsar sites in India has grown quickly. Does designation alone protect a wetland? Discuss with reference to the Wetlands (Conservation and Management) Rules, 2017. (Practice question by Shishya, 250 words)
Syllabus line (General Studies-III): “Conservation, environmental pollution and degradation, environmental impact assessment.” — UPSC CSE 2026 notice, read 27 Oct 2026.
Access and Benefit-Sharing: ₹1.04 crore from crop genetic resources goes to the States
The National Biodiversity Authority (NBA) has shared about ₹1.04 crore of Access and Benefit-Sharing (ABS) money with 27 State Biodiversity Boards and two Union Territory Biodiversity Councils. The money came from three seed and crop-protection companies that used Indian crop genetic resources.
Background
The crops named are pearl millet, jowar, maize, rice and bottle gourd.
Because these resources were bought through markets and traders, individual benefit claimers could not be identified; the NBA split the money by area, in proportion to where each crop is grown, using the agriculture ministry's statistics.
Uttar Pradesh received the largest share in the release's state-wise table.
The release says agriculture has generated about ₹87 crore in ABS contributions, and that the NBA has released over ₹204 crore in ABS benefits so far.
India links its ABS framework to the Convention on Biological Diversity, the Nagoya Protocol and Target 13 of the Kunming-Montreal Global Biodiversity Framework.
Why it matters for the exam
ABS is the practical answer to 'who gains when a company uses a country's genetic resources': the user pays, and the money returns to conservation.
The area-based method shows a real design problem: when the original holders of a resource cannot be traced, benefits go to the regions where the crop grows, not to named communities.
Useful for Mains answers on biopiracy, farmers' rights and the Biological Diversity framework.
For Prelims revision
ABS amount shared: about ₹1.04 crore, to 27 State Biodiversity Boards and 2 UT Biodiversity Councils.
Target 13 of the Kunming-Montreal Global Biodiversity Framework covers fair and equitable sharing of benefits from genetic resources, digital sequence information and traditional knowledge.
Mains practice
What is Access and Benefit-Sharing? Using a recent example, explain how benefits are shared when the original holders of a genetic resource cannot be identified. (Practice question by Shishya, 150 words)
Syllabus line (General Studies-III): “Conservation, environmental pollution and degradation, environmental impact assessment.” — UPSC CSE 2026 notice, read 27 Oct 2026.