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

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't ...

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

We kid you not, this Mk7 Volkswagen Golf R actually has over 1,000 horsepower and utilizes a heavily upgraded version of its four-banger ...