How long do you have to remain in a place before you can truthfully say you lived there, as opposed to just visiting it? What’s the difference between to live somewhere and to stay somewhere? This philosophical question is complicated by the...
In 1803, a shy British pharmacist wrote a pamphlet that made him a reluctant celebrity. The reason? He proposed a revolutionary new system for classifying clouds — with Latin names we still use today, like cumulus, cirrus, and stratus. Also: when...