Check the detailed syllabus, exam pattern, and preparation strategy. Learn subject-wise topics, marking scheme, and tips to ...

Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Quanta Magazine is an editorially independent online publication launched by the Simons Foundation in 2012 to enhance public understanding of science. Why Quanta? Albert Einstein called photons ...