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

Postoperative Radiotherapy ± Cetuximab for Intermediate-Risk Head and Neck Cancer ASCO Guidelines provide recommendations with comprehensive review and analyses of the relevant literature for each ...

I write about money. I’ve been reviewing tax software and services as a freelancer for PCMag since 1993. Along the way, I took on reviews of other types of business and personal finance technology.

School of Nursing, Beijing University of Chinese Medicine, Beijing, China Background: Physical literacy (PL) is increasingly recognized as a foundational component of lifelong physical activity ...