Professor David Farina is known online for his YouTube channel Professor Dave Explains, in which he helps people understand the basics, and sometimes the complexities of science, particularly chemistry. 

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Professor Dave links:

https://twitter.com/daveexplains

https://www.youtube.com/professordaveexplains

Andrew Gold links:

http://youtube.com/andrewgold1

http://instagram.com/andrewgold_ok

http://twitter.com/andrewgold_ok

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