Nova (1974– )
5 Feb. 2020Polar Extremes
Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life.
12 Feb. 2020Dog Tales
A look at dog domestication, how scientists test wolf intelligence and decode canine DNA, and what science says about a dog's love for humans.
19 Jan. 2020Cat Tales
The perplexing behaviors of cats have often raised the question of whether humans ever really domesticated felines.