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

MacArthur Fellow Kareem El-Badry is redefining how we understand the cosmos, uncovering black holes, decoding the ...

The science is unsettled, but researchers say there is cause for concern. Tiny plastic particles like these—called microplastics—are added to some exfoliating skincare gels and can get into the ...

Police are investigating after two public place shootings were reported in Sydney’s west this morning. About 1am today (Friday 17 October 2025), emergency services were called to a home on Bluegum ...

I am curious if you ever played the version of “tag” I know. It’s shockingly banal to remember: You were either It or not It. Strangely, your task was the same: to feverishly run around to escape ...

Buying the right camera, lens, accessory or software to suit your photography is really important. Our product reviews offer independent views with hands-on opinion and honest verdicts aimed to give ...

Abstract: This paper presents a practical synchronous sliding mode control (SSMC) using time-delay estimation (TDE) for trajectory tracking of a 4-DOF parallel robot with a variant payload, unknown ...

For the first time in 12 years, Penn State Football is searching for a new head football coach. Sunday, the James Franklin era came to an end, as Penn State Athletic Director Pat Kraft announced that ...