Like many mesoamerican cultures, buildings were often made right on top of previous structures. Chichen Itza is no exception, making it difficult to determine precisely when the Temple was constructed. read more
Luis Federico Leloir (1906-1987) was a doctor and biochemist who became the first Spanish speaking scientist to with the Nobel Prize in Chemistry in 1970. read more
Memorials are built to honor dead people, often soldiers that have been killed in a war, like the Lincoln Memorial in Washington D.C. One of the most famous memorials is Mount Rushmore, in South Dakota. read more