Hank tells us about another great mind in science - Barbara McClintock won the Nobel Prize in Physiology for her discovery of mobile genetic elements and remains the only woman to receive an unshared prize in that category.

Have you had your period at the same time as your friends or family members? Is this a physiological effect or coincidence? Join Hank Green as he provides some insight on this phenomenon!

Barbara McClintock used corn to make pioneering discoveries in genetics, despite facing gender bias and initial skepticism from the scientific community.