One Life: The Mask of Lincoln

National Portrait Gallery historian David C. Ward discusses images of Abraham Lincoln that document his life in the White House. (03:53)

At the Smithsonian

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Elmo's Rise to Stardom (05:29)

Preview thumbnail for Prince's Iconic Guitar

Prince's Iconic Guitar (08:26)

Preview thumbnail for Conversations in Context: Music

Conversations in Context: Music (13:43)

Preview thumbnail for Conversations in Context: Media

Conversations in Context: Media (10:01)

Preview thumbnail for Conversations in Context: Marches

Conversations in Context: Marches (10:09)

Preview thumbnail for Conversations in Context: Memory

Conversations in Context: Memory (12:27)

Preview thumbnail for This German Explorer Held Electric Eels in His Bare Hands

This German Explorer Held Electric Eels in His Bare Hands (02:05)

Preview thumbnail for Humboldt's Journey to Cumana Was Packed With Discovery

Humboldt's Journey to Cumana Was Packed With Discovery (03:21)

Preview thumbnail for How Smithsonian Researchers Are Studying Elephant Behavior

How Smithsonian Researchers Are Studying Elephant Behavior (00:47)

Preview thumbnail for Meeting Up With a Key Member of the Little Rock Nine

Meeting Up With a Key Member of the Little Rock Nine (03:37)

Preview thumbnail for Lava From Kilauea Reaches the Ocean

Lava From Kilauea Reaches the Ocean (02:26)