Describe one thing you learned from the video that you didn’t know before.

Describe one thing you learned from the video that you didn’t know before.Give your overall thoughts on the subject that was discussed. https://www.ted.com/talks/anne_madden_meet_the_microscopic_life_in_your_home_and_on_your_face?utm_campaign=tedspread&utm_medium=referral&utm_source=tedcoms