CBSE class 12 maths exam: Question paper QR code leads to rickrolling, board issues clarification

The Central Board of Secondary Education is once again in the news, but this time for a music video. The board conducted its Class 12 Maths exam on March 9, 2026. Since the exams concluded, students ...
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World's smallest QR code can store data for thousands of years ‪—‬ but you need an electron microscope to see it

Scientists have created the smallest QR code in the world, measuring just 3.07 × 10⁻⁹ square inches (1.98 square micrometers). It can preserve data for thousands of years and it's so small that you ...