Dear Friends, Happy Hypatia Day! To celebrate it today, one may observe the moment of the vernal equinox with the help of an ancient type device like the one attached. Let us hope next year it will become the official international holiday upholding the following fundamental equation: Hypatia Day = Vernal Equinox Day = March 20 = Women in Science Day. Cheers to all women in science! Ari Belenkiy