Optical storage and even DNA storage could be a significant contender for the digital archive market in the coming decades.
UPSC Prelims Geography revision strategy for 2026 exam. Learn how to revise Physical, Indian and World Geography with maps, PYQs and current affairs to improve accuracy in GS Paper I.
Discover the best UPSC map-based question strategy. Learn how to use PYQs, blank maps, atlases, and current affairs to ...
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