1800-1875+(Smedile.Enrique)

Johan Agust Arfwedson
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DOB: b. January 12 1792 d. October 28 1841 Country of origin: Sweden Discovery: Lithium year of discovery: 1817

Mr Arfwedson was born to a very wealthy family. His father was a merchant and a factory owner. Johan studied law and when graduated received a job at the Royal Board of Mines where he later received the position of Notary in 1814. He was good friends with Jons Jakob Berzelious who was a chemist. Johan had special access to his friends lab where while studying and anylizing petalite he discovered the element of lithium.

www.britannica.com/EBchecked/.../**Johan**-**August**-**Arfwedson**

George Washington Carver

DOB: b. January 1864 d. January 5, 1943 County of origin: United States of America Discovery: Alternative Agriculture

Mr. Carver was born around the year 1864. It is believed that he was born before the destruction of slavery. Carver was a scientist as well as a botanist. During his studies he figured out other ways of growing plants and even growing different types. He became famous for his work and essays on alternative farming. He also studied the effects of farming and became an advocate of sustainable agriculture, so not to cause any bad effect in the environment.

**www**.invent.org/hall_of_fame/30.html

Marie Curie DOB: November 7, 1861 Warsaw/ Polish Year of Discovery: 1896

She studied in the field of Physics and chemistry. Was honored and the first to receive two Noble prizes, first woman to serve as a professor in the University of Paris. One of her greatest achievement were in the discovery of radioactivity. technique to isolate radioactive isotopes. She also decovered polonium and radium. She was married. her daughter, son in law and husband all received noble prizes.