7. Pasteurization
- Invented By: Louis Pasteur
Louis Pasteur was an incredible French Chemist and Biologist who invented several life-changing things for the world. The most notable is clearly Pasteurization. The latter might be one of the most significant and world-changing inventions ever. Pasteurization has to do with making things safe to drink or eat.

Essentially, water and certain packaged or unpackaged foods are treated with heat to completely destroy pathogens. This kills bad bacteria and can even extend the shelf life of an item. It eliminates the risk of diseases yet can’t kill bacterial spores. This is why it needs a second round of this too, which completely eliminates any problems. Store-bought Milk and Fruit Juice, for example, are safe to drink for life as a result of this invention.