Wonderful, whimsical illustrations by Ann Nowacka — TEDxKraków’s resident designer. "Drawing is my primary way of thinking," Ann says. "Before I can speak my mind, I see pictures … I draw the magical world that surrounds us … I continue to look for beauty around me."

Ann worked closely with the TEDxKraków to develop the event’s visual identity. Learn more about the event housed in one of Poland’s oldest cities at their website, featuring some of Ann’s designs»

At TEDxYouth@Manchester, genetics researcher Dan Davis introduces the audience to compatibility genes — key players in our immune system’s functioning, and the reason why it’s so difficult to transplant organs from person to person: one’s compatibility genes must match another’s for a transplant to take.

To learn more about these fascinating genes, watch the whole talk here»

(Images from Davis’s talk, Drew Berry’s animations, and the TED-Ed lessons A needle in countless haystacks: Finding habitable worlds - Ariel Anbar and How we conquered the deadly smallpox virus - Simona Zompi)