Matthias Schleiden. He stated that the different parts of the plant organism are composed of cells. Thus, Schleiden and Schwann became the first to formulate what was then an informal belief as a principle of biology equal in importance to the atomic theory of chemistry.
Derek Jeter and his wife announced they are expecting their first child on a poignant post on their website Monday. Hannah Jeter said she is expecting a baby girl for which the excited father-to-be has already picked out a name.
WATCH: 5 Things to Know About the Hannah Davis. ET confirmed in October that Jeter popped the question to his then-girlfriend of three years, and the two celebrated their engagement in Napa with family. When Davis spoke to Health magazine earlier this year, she shared her plans to keep the wedding simple.