#1 On injections:

twitter.com

#2 On chicken pox:

SparkyWizard05 / Via reddit.com

#3 On mothering:

twitter.com

#4 On animals:

SuicidalChad / Via reddit.com

#5 On the plague:

DanaSchwartzzz / Via twitter.com

#6 On the flu:

PresidentBrawndo / Via reddit.com

#7 On chemicals:

facebook.com

#8 On outbreaks:

bertjebub / Via reddit.com

#9 On camps:

therealslimnady / Via reddit.com

#10 On prevention:

facebook.com

#11 On essential oils:

facebook.com

#12 On children:

CharlesoftheDevon / Via reddit.com

#13 On studies:

JadedAyr / Via reddit.com

#14 On CENSORSHIP:

facebook.com

#15 On segregation:

facebook.com

#16 On how they work:

FintanOToolbox / Via twitter.com

#17 On human DNA:

takethatdoctors / Via twitter.com

#18 On peer reviews:

KyleRichXV / Via reddit.com

#19 On car decals:

ThePointOf_Paradox / Via reddit.com

#20 And on playing God:

Traveler_World / Via reddit.com

Via BuzzFeed, Preview photo credit: DanaSchwartzzz / twitter.com