<h3><em>The science of astronomy took a huge leap forward in the first decade of the ... Galileo Galilei did not invent the telescope but was the first to use it ... The main problem with his telescopes was their very narrow field of view, ... They also have an excellent new site: Galileo's Telescope, the Instrument that Changed the World.</em></h3>
Pesticides reduce the amount of bugs that could eat or mess up the food that farmers grow. With the help of pesticides farmers can sell all or most of their crops without worrying about it being damaged by bugs.
