2 August 17

Those born on 2 August include French sculptor Frédéric-Auguste Bartholdi (1834-1904), who designed the Statue of Liberty, and Irish physicist John Tyndall (1820-1893), who demonstrated why the sky is blue and proved that the Earth's atmosphere has a greenhouse effect. So, I'm wearing my New York City tie featuring the Statue of Liberty, on a pastel blue shirt. (To be truthful, the blueness of the open sky results from "Rayleigh scattering" rather than the Tyndall effect, but we will leave it to physicists to sort out those differences.)