200 word minimum, the link is provided. Please, no plagiarism.

 GREENR Jonas Salk/Polio/Tessla What do they have in common:

What do Jonas Salk the inventor of the Polio vaccine and Elon Musk, the inventor of the Tesla car, have in common?  These different people who have given away their technology for the betterment of humankind.

Link: http://resources.gale.com/gettingtogreenr/current-issues/elon-musk-the-jonas-salk-of-climate-change/