Have a look at the picture of George Washington on a dollar bill. Note his stiff, unsmiling lips. Doesn’t he look uncomfortable? Well, he was. He had a raging toothache.
The portraitist, Gilbert Stuart, was a charming guy and well… Read More
German scientist Hennig Brand stored 50 buckets of urine in his cellar in 1675, hoping it would turn into gold. Instead it led to his discovery of the element phosphorous.