A young Led Zeppelin performs their now-classic songs "How Many More Times" and "Babe, I'm Gonna Leave You" for Danish TV in March 1969.

Postmodern Jukebox with singer Tia Simone performed a 1960s Motown cover of the song "What I Like About You" by The Romantics.

Randall Munroe of xkcd and Henry Reich of MinutePhysics explained when the last light would go out should all of humans disappear from Earth.

A bulldog named Theo, who is obsessed with the metal bowls that he carries around the house, received a box full of his favorite items.

Laszlo Buring played the classic Eagles song "Hotel California" in the highly distinctive bluesy style of the late, great Stevie Ray Vaughan.

Lucie Frost explained how the Brooklyn Dodgers got their name from residents who would have to dodge trolley streetcars to get to games.

HanahakiBlank created a mashup of anime films from the 1980s and 1990s that pays tribute the latest technology of the time.

Bloxsy performed a medley of guitar riffs from highly distinctive rock songs from the 1990s, playing each in order of the year released.

Andrea Love created a short stop motion animation featuring a needle felted lighter sparking a flame and lighting a scrap of paper on fire.

Lee Stevens and paleontologist Roger Benson of the American Museum of Natural History talked about how dinosaurs are named.