New research published in the American Journal of Human Biology has shown a link between certain digit ratios, in this case the ratio between the length of the index finger and ring finger, and oxygen ...

Examine your fingers. Which is longer? Is it the index finger (the finger you use to point with – technically the second digit, or 2D, counting the thumb), or the ring finger (the fourth digit, or 4D) ...

Scientific research suggests our sexuality may be indicated in how our hands look. There is something called the 2D:4D ratio, which determines whether your hands are male-typical or female-typical. In ...