Antibiotics have changed the world and helped keep us healthy.

But, the use of broad spectrum drugs have had some serious consequences. Bacteria and disease expert Dr. Peg Riley has some big ideas about bacteria and how to deal with these consequences. She’s also here to set the record straight about how often you should be washing your hands and just how safe vaccines are.

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Science Rules! with Bill Nye 

Bill Nye is on a mission to change the world — one voicemail at a time.