Highlights April 17 to 23

Nature at 7 p.m. Sunday presents “Survivors of the Firestorm”, an investigation of the bush fires that tore through the Australian state of Victoria in February 2009 and incinerated over a million acres of land but managed to maintain an extraordinary capacity for healing.

The saga continues at 165 Eaton Place with new characters in a three-part sequel to the much-loved Masterpiece Classic series “Upstairs Downstairs” from the 1970s at 8 p.m. Sunday.

Forgiveness: A Time To Love and A Time To Hate, the two-part series from award-winning filmmaker Helen Whitney, examines the complexities and contradictions of forgiveness as well as the public and private aspects of the concept of forgiveness as it relates to religious belief, personal conduct and society through case studies at 9 p.m. Sunday.

American Masters at 8 p.m. Monday presents the story and legacy of the man who almost single-handedly saved the Yosemite Valley of California from destruction and was the force behind the creation of the National Parks Service in “John Muir In The New World”.

Black In Latin America at 7 p.m. Tuesday explores how race has been socially constructed in a society whose people reflect centuries of inter-marriage, and how the country’s troubled history with Haiti informs notions about racial classification.

In this week’s episode of Frontline at 8 p.m. Tuesday, correspondent Martin Smith investigates how the for-profit schools are aggressively recruiting huge numbers of new veterans with educational promises that many now question whether they can keep. Also in this hour, producer Tom Curran and reporter Mark Trahant examine a little-known chapter of the Catholic Church sex abuse story: decades of abuse of Native Americans by priests and church workers in Alaska.

Secrets of the Dead: Lost In The Amazon at 7 p.m. Wednesday presents a modern day quest to find the truth behind one of exploration’s greatest mysteries: what happened to famed adventurer Col. Percy Fawcett, who went looking for a city of gold — the Lost City of “Z” — in the Amazon in 1925 and disappeared in the jungles of Brazil forever?

Nova at 8 p.m. Wednesday travels the globe to reveal the surprising technologies that just might turn back the clock on climate change with a focus on the latest and greatest innovations in “Power Surge”.

Calvin Trillin, who has written for The New Yorker, The Nation, Time and others, talks about his writings on Texas on Overheard with Evan Smith at 7 p.m. Thursday and 8:30 p.m. Friday.

Based on her new book, Suze Orman’s Money Class at 8 p.m. Thrusday reveals Suze’s expert take on what actions people need to take in light of the new economy.

What do changing climate zones mean for our garden? on Central Texas Gardener at noon Saturday. On tour, visit a makeover that updated its look with new plants and old garden art.

Kentucky’s indie rock heroes My Morning Jacket return to the Austin City Limits stage at 7 p.m. Saturday to showcase their latest acclaimed album “Evil Urges“.