Highlights 9/20 to 9/26

See how Hawaii’s breathtaking beauty was sculpted by earthquakes, tsunamis, and volcanoes on land and sea at 7 p.m. Sunday on Nature.

Lewis and Hathaway track down the prime suspect in the assault of a teenage girl on Masterpiece Mystery! at 8 p.m. Sunday revealing a web of intrigue and sordid secrets that expose the Oxford elite.

History Detectives research the truth behind Thomas Edison’s PsychoPhone, a device believed to have the ability to record messages from the afterlife, Monday at 8 p.m.

In Argentina, thousands who were kidnapped, tortured and then “disappeared” by the military during the 1976-1983 dictatorship speak out on Independent Lens Monday at 9 p.m.

PBS Previews: The National Parks: America’s Best Idea Monday at 10:30 p.m. and Thursday at 9:30 p.m. presents a preview of the new Ken Burns documentary series; the story of an idea that the most special places in the nation should be preserved, not for royalty or the rich, but for everyone.

Nova exposes new findings that call into question the long-held belief that all inherited traits are passed on by our genes Tuesday at 7 p.m.

For the first time, scientists can reveal just how measurable and dangerous stress can be on the human body. See how much of a risk you are at on Killer Stress: A National Geographic Special at 8 p.m. Tuesday.

Rocky Otoo is a Bronx-bred teen daughter of Ghanaian parents who leaves her mother to live with her father, a chief in Ghana and struggles to reconcile her dual legacies on P.O.V. at 9 p.m. Tuesday.

Diego Rivera, considered the greatest Mexican painter of the 21st century, is the focus of American Masters 10 p.m. Tuesday.

Great Lodges of the National Parks Wednesday at 7 p.m. and 8 p.m. gives a fascinating tour of America’s national parks and their charming historic lodges.

A portrait of the conservationist and Pulitzer Prize-winning author Wallace Stegner whose numerous full-length works and countless essays address earth’s landscape, humankind’s footprint, and the evolution of a region and nation on Wednesday at 9 p.m.

John Mayer, on the heels of his tour for his Grammy-winning album, Continuum, makes his triumphant return to Austin City Limits Wednesday at 10 p.m. and Friday at 9 p.m.

Texas Monthly Talks on Thursday at 7 p.m. sits down with T. Boone Pickens. Known best for his huge success in the oil and gas industry, Pickens has recently made great strides to push the US away from dependence on foreign oil by developing new sources of power at home.

In “Best of” Downtown, get a glimpse of all the best Downtown Austin has to offer by visiting popular spots like: Pitch and Putt, Giant Chess, Hoffbrau Steaks, BMX Bike Ballet, Downtown Pillow Fight, and Blue Lapis Requiem at 7:30 p.m. Thursday.

As Congress weighs legislation to provide universal health care in the U.S., correspondents provide analysis, discussion, insight and engagement on PBS Special Report on Health Care Reform Thursday at 8 p.m.

In a special episode Saturday at 7 p.m., Austin City Limits Presents: Hardly Strictly Bluegrass captures the music and spirit of the summer bluegrass festival that takes place annually in San Francisco’s Golden Gate Park. Highlights include performances by Earl Scruggs, Doc Watson, Ricky Skaggs and Bruce Hornsby, Bela Fleck, Gillian Welch and Emmylou Harris.