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

The X-Files was often at its best when it prioritized laughs over suspense and horror, and “Small Potatoes” is one of the ...

Cell movement is an essential biological process, whether it's cancer cells metastasizing to other parts of the body or ...

Stanislav Kutuzov felt the drillhead he was controlling smash into the rock more than 100 metres below him high on a glacier ...

Catch up on Dateline: Unforgettable on the Oxygen App. The beautiful 16-year-old loved riding on horseback through the picturesque hills of Spring Creek, Nevada, where she lived. She was close with ...