In this rare clip from 1972, legendary psychiatrist and Holocaust-survivor Viktor Frankl delivers a powerful message about the human search for meaning -- and the most important gift we can give others.
Birds, a perennial human fascination, entertained medieval homes long before science took them for serious study. "Wisdom of Birds" author Tim Birkhead tours some intriguing birdwatcher lore (dug up in old field journals) -- and talks about the role it plays in ornithology today.
185 voices from 12 countries join a choir that spans the globe: "Lux Aurumque," composed and conducted by Eric Whitacre, merges hundreds of tracks individually recorded and posted to YouTube. It's an astonishing illustration of how technology can connect us.