How UPSC frames confusing options—understand invented species and avoid traps.
Gaia Space Telescope: What It Measures & Why It Matters
Quick revision: parallax, astrometry, and how Gaia builds a 3D map of our galaxy.
Santorini & Kolumbo Volcanoes: Learning Points
Aegean volcanic arc, caldera formation, and earthquake–volcano relation explained in 10 bullets.
Kenya at a Glance: Geography, Economy & India Ties
Location, neighbours, key facts, and India–Kenya cooperation—perfect for prelims map-based questions.