Pope Gregory XIII

Leap Day is coming. Marvin Samuel Tolentino Pineda/iStock, via Getty images Bhagya Subrayan, Purdue University Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why does a leap year have 366 days? Does the Earth move slower every four years? – Aarush, age 8, Milpitas, California You may be used to hearing that it […]