the.com/fingers
ten tiny levers that built every cathedral, fired every gun, and typed every lie
no musclesFingers move via tendons pulled from the forearm
unique printsEven identical twins have different fingerprints
length clueFinger ratios hint at prenatal testosterone exposure
sensitive tipsFingertips detect bumps as small as 13 nanometers
prune wrinklesWet fingers wrinkle to grip better, a nerve trick