UPSC Environment Guides
Environment, ecology, biodiversity and conservation for UPSC.
July 21, 2026
How to study species in news for UPSC Prelims
Species questions are the most predictable in the paper. Four lines per species, built up through the year, do far more than a last-minute list of names.
July 21, 2026
Environment vs ecology vs biodiversity: the difference for UPSC
Environment is the surroundings, ecology is the study of relationships within them, and biodiversity is the variety of life. A single forest makes the difference obvious.
July 21, 2026
National park, wildlife sanctuary and biosphere reserve: the difference for UPSC
A national park extinguishes every right, a sanctuary may not, and a biosphere reserve is a UNESCO designation rather than an Indian statute. The difference is legal.
July 21, 2026
Climate change agreements timeline for UPSC: UNFCCC to Paris
From Rio in 1992 to Paris in 2015, climate diplomacy moved from binding targets to national pledges. The sequence, the reason behind each shift, and India's position at every stage.
July 21, 2026
Ramsar sites and wetlands: how to prepare for UPSC
The list of Ramsar sites keeps growing, so memorising it is a losing strategy. What the convention is, which sites carry a second designation, and how Indian law treats wetlands.