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

Using the Helios-1 quantum computer, researchers have used a record-breaking number of error-proof qubits to run the first and biggest quantum simulation of a model for perfect conductivity ...

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Yarilet Perez is an experienced multimedia journalist and fact-checker with a ...