The Greeks wanted to know more about the world, the heavens and themselves. People studied about the sky, sun, moon, and the planets. The Greeks found that the earth was round. Eratosthenes of Alexandria, who died about 194 BC, wrote on astronomy and geography, but his work is known mainly from later summaries. He is credited with being the first person to measure the Earth's circumference.
Botany is the study of all aspects of plant life, including where plants live and how they grow.
The Greek philosopher Aristotle , who lived during the 300's BC, collected information about most of the plants known at that time in the world. He also studied other sciences and math. His student Theophrastus classified and named these plants. Theophrastus often called the father of botany. Aristotle and Theophrastus developed an extremely important type of science that is studied all over the world.