This Wednesday, February 5, in a two-hour special from NOVA, “renowned paleontologist Kirk Johnson takes us on an epic adventure through time at the polar extremes of our planet.” With support from the Heising-Simons Foundation, this episode will uncover the history and dramatic changes at the ends of the Earth, and what this means for the planet’s climate.

Tune in this Wednesday at 8pm on PBS. For more information, visit Polar Extremes.