Polydactyly (from Ancient Greek (polus) “many” and (daktulos) “finger”) is a condition in which a person (or animal) has more than five fingers per hand or five...
An ice-cream headache, also known as brain freeze, cold-stimulus headache,or its given scientific name sphenopalatine ganglioneuralgia (meaning “nerve pain of the sphenopalatine ganglion“), is a form of...
In the Northern Hemisphere spring officially begins at 7:21 p.m. ET on Sunday, March 20, 2011—the vernal equinox, or spring equinox. An equinox occurs...