Season 46
Discover the science behind Leonardo da Vinci's masterpieces—and Mona Lisa's iconic smile.
Decoding da Vinci
Amazing fossils reveal how mammals took over after an asteroid wiped out the dinosaurs.
Rise of the Mammals
Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.
The Planets: Ice Worlds
NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.
The Planets: Saturn
Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth