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

Foundational research is paving the way for next-generation quantum sensors. Physicists in Australia and the United Kingdom ...

Graphene's journey from discovery to industrial use has been marked by impressive progress. It was first discovered in 2004, ...

Scientists then defined the “edge” of this gaseous material by introducing a laser, which formed a wall around the atoms. Once atoms encountered this light, they flowed in just one direction—much like ...