March 14th -- PI Day -- Albert Einstein's birthday
Albert Einstein was born in Ulm, in the Kingdom of Württemberg in the German Empire, on 14 March 1879 into a family of secular Ashkenazi Jews. In 1880, the family moved to Munich, where Einstein's father and his uncle Jakob founded Elektrotechnische Fabrik J. Einstein & Cie, a company that manufactured electrical equipment based on direct current.
Einstein excelled at math and physics from a young age, reaching a mathematical level years ahead of his peers. The 12-year-old Einstein taught himself algebra and Euclidean geometry over a single summer. Einstein also independently discovered his own original proof of the Pythagorean theorem at age 12. A family tutor Max Talmud says that after he had given the 12-year-old Einstein a geometry textbook, after a short time "[Einstein] had worked through the whole book. He thereupon devoted himself to higher mathematics... Soon the flight of his mathematical genius was so high I could not follow." His passion for geometry and algebra led the 12-year-old to become convinced that nature could be understood as a "mathematical structure". Einstein started teaching himself calculus at 12, and as a 14-year-old he says he had "mastered integral and differential calculus".
By 1908, he was recognized as a leading scientist and was appointed lecturer at the University of Bern.
Einstein visited New York City for the first time on 2 April 1921, where he received an official welcome from Mayor John Francis Hylan.
Because of Einstein's travels to the Far East, he was unable to personally accept the Nobel Prize for Physics at the Stockholm award ceremony. In his place, the banquet speech was made by a German diplomat, who praised Einstein not only as a scientist but also as an international peacemaker and activist.
In October 1933, Einstein returned to the US and took up a position at the Institute for Advanced Study, noted for having become a refuge for scientists fleeing Nazi Germany.
Throughout his life, Einstein published hundreds of books and articles. He published more than 300 scientific papers and 150 non-scientific ones. Einstein's intellectual achievements and originality have made the word "Einstein" synonymous with "genius".
Einstein's works, both independent & collaborative, included:
1905 – Annus Mirabilis papers
Statistical mechanics -- Thermodynamic fluctuations and statistical physics, Theory of critical opalescence
Special relativity
General relativity -- General relativity and the equivalence principle, Gravitational waves, Hole argument and Entwurf theory, Physical cosmology, Energy momentum pseudotensor, Wormholes, Einstein–Cartan theory, Equations of motion
Old quantum theory -- Photons and energy quanta, Quantized atomic vibrations, Adiabatic principle and action-angle variables, Bose–Einstein statistics, Wave–particle duality, Zero-point energy, Stimulated emission, Matter waves
Quantum mechanics -- Einstein's objections to quantum mechanics, Einstein–Podolsky–Rosen paradox
Unified field theory
Einstein–de Haas experiment
Schrödinger gas model
Einstein refrigerator
Maybe you already knew this about Einstein; maybe you didn't. Let's celebrate his achievements on this day, the 143rd anniversary of his birth....by finding a cache, of course! 
Information above is gleaned from https://en.wikipedia.org/wiki/Albert_Einstein