Highlights 4/12 to 4/18

Nature at 7 p.m. Sunday looks at the majestic Andes, home to a multitude of environments from an ice desert to mile-high geysers.

Masterpiece Classic at 8 p.m. Sunday presents the third installment of “Little Dorrit,” as the Dorrit family leaves their life of drama for upper-class idleness in Italy.

Renowned violinist Gil Shaham performs joined by 10-year-old violinist Alice Ivy-Pemberton and 17-year-old pianist Ji-Yong Kim in From the Top at Carnegie Hall at 9:30 p.m. Sunday.

American Experience “We Shall Remain” at 8 p.m. Monday tells the story of Massasoit, the leading sachem of the Wampanoag Indians, and his tribe’s interaction with English colonists.

In this first hour of Appalachia: A History of Mountains and People at 9:30 p.m. Monday, viewers explore the deep and surprising history of Applachia from plants and animals, to early human life.

Nova at 7 p.m. Tuesday returns to a series that began in 1987, following seven Harvard Medical students as they started their curriculum; now more than 20 years later, we see what kind of doctors and people they have become.

Frontline/World at 8 p.m. Tuesday travels to Pakistan to investigate the increasing power of a new branch of the Taliban, and then to South Korea that is now facing a potential health crisis of Internet addiction.

Parents and Teens: Behind the Wheel at 9 p.m. Tuesday examines where teens form their driving habits and the influence of parental behavior on the driving conduct of newly-licensed teens.

Independent Lens at 10 p.m. Tuesday looks at how Wangari Maathai of Kenya received a Nobel Peace Prize in 2004 for the simple act of planting trees.

With arched Gothic Revival windows and lone steeples rising up into the Texas sky, Painted Churches of Texas at 8 p.m. Wednesday explores the history and beauty of these particular churches.

Hosted by CNN veteran Frank Sesno, Planet Forward at 9 p.m. Wednesday gives a look at people’s ideas about the nations energy future, including talks with scientists, policy makers and experts.

Nigerian bandleader/political activist Femi Kuti brings his groovy, multi-layered Afrobeat to Austin City Limits at 10 p.m. Wednesday and 11 p.m. Friday.

Downtown at 8 p.m. Thursday brings together the history of Brackenridge hospital, a new “Caffeine Culture” and the brilliance of Austin’s Poetry Slam.

As a producer of artists like Joss Stone, Snoop Dogg and John Legend, Raphael Saadiq brings his knowledge and his own acclaimed music to the Harvard Club in Live from the Artists Den at 9 p.m. Thursday.

Uncommon Law at 9:30 p.m. Friday looks at the life of Leon Jaworski, a man caught in the heart of major social and political issues of the 20th century, from post World War II war crimes to Watergate.

Musical legend Van Morrison performs timeless classics as well as songs from his latest album “Pay the Devil” in Austin City Limits at 7 p.m. Saturday.