Inventions, Discoveries and Explorations

Inventions, Discoveries and Explorations

Insulin was discovered by:

Donald Reagan

Alexander Flaming

Fredrick Banting

Fredrick Sanger

Author: rikazzz Comment

Inventions, Discoveries and Explorations

Who invented bifocal lenses for glasses?

Alfred B. Nobel

Thomas Alva Edison

Benjamin Franklin

Rudolf Diesel

Author: rikazzz Comment