Ciro used to watch a television nature show called "Planeta Terra" in the legendary TV Cultura
with his parents in the couch when he was young, and under a duvet when it was a bit cold. Those days were the best. The narrator's lady voice was particularly soothing, and would easily put you in a kind of sleepy trance, her name is Valéria Grillo
TODO what was the original show exactly? Here is a sample: www.youtube.com/watch?v=vNwfYEMdrRU
Very likely just a translation of some British nature show with a custom Brazilian
intro and presenter. Credits at end mention English narrator: "Eugene Fraser", and "Thirteen WNET Nature" production, which produced Nature (1982)
that ran since 1982, making that a likely candidate.