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Science & Tech

Silicon Dreams: Semiconductors and ISM 2.0

Chips power everything from phones to missiles, yet almost none are made in India. The India Semiconductor Mission, now in its deeper 2.0 phase, is the country's bid to join the global chip order.

28 September 2026 · 39 min read

Geography

Beneath Your Feet: Inside the Earth's Interior, Minerals and Rocks

No one has seen deeper than a few kilometres, yet we know the Earth's layered anatomy in detail. Seismic waves, the rock record and mineral chemistry reveal the interior - and UPSC tests all of it.

27 September 2026 · 16 min read