A group of people wind up in a terrifying alternate universe on the scary Saturday night movie “Ferocious Planet” (Syfy at 9 p.m.) after an experiment goes awry.

Sunday talk shows: “Platts Energy Week” (WUSA at 8 a.m.) interviews Reps. John B. Larson (D-Conn.) and John Sullivan (R-Okla.); “BioCentury This Week” (WUSA at 8:30) features Abigail Alliance’s Frank Burroughs; “Ideas in Action With Jim Glassman” (MPT at 8:30, 9:30 on WHUT) has author Josipa Roksa, Money Magazine’s Kim Clark and Manhattan Institute’s James Piereson; “Fox News Sunday” (Fox at 9) hosts White House senior adviser David Plouffe and Rep. Eric Cantor (R-Va.); “Politics Program With Mark Plotkin” (NewsChannel 8 at 9) features Rep. Frank R. Wolf (R-Va.) and Federal News Radio’s Mike Causey; “White House Chronicle” (WETA at 9) has The Post’s Frances Stead Sellers, Wall Street Journal’s Amy Marcus, author Deborah Waroff and DePaul University’s Leonard Jason; “State of the Union” (CNN at 9) features Plouffe, Sen. Richard J. Durbin (D-Ill.), Rep. Jeb Hensarling (R-Tex.), entrepreneur Donald Trump, and former British prime minister Tony Blair.

“The Chris Matthews Show” (NBC at 10) hosts Politico’s John F. Harris, CNN’s Gloria Borger, Atlanta Journal-Constitution’s Cynthia Tucker and The Post’s Michael Gerson; “This Week” (ABC at 10) features Plouffe, Reps. Mike Pence (R-Ind.) and Chris Van Hollen (D-Md.) and actor Robert Redford; “Newsmakers” (C-SPAN at 10) talks to Republican National Committee Chairman Reince Priebus; “Face the Nation” (CBS at 10:30) hosts Sens. Charles E. Schumer (D-N.Y.) and Jeff Sessions (R-Ala.); “Meet the Press” (NBC at 10:30) has Plouffe, Rep. Paul Ryan (R-Wis.), Special Olympics Chairman Tim Shriver, CNBC’s Jim Cramer, New York Times’s Helene Cooper and NBC’s Chuck Todd; “Washington Watch With Roland Martin” (TV One at 11) hosts Rep. Karen Bass (D-Calif.), columnist Sophia Nelson, American Urban Radio Networks’s April Ryan and others; “This Week in Defense News” (WUSA at 11) has NATO deputy Col. John Ferrari; “EnergyNOW!” (WJLA at 11) talks to former governors Jennifer Granholm (Mich.) and Bob Ehrlich (Md.); “The McLaughlin Group” (WUSA at 11:30) features MSNBC’s Pat Buchanan, Newsweek’s Eleanor Clift, National Review’s Rich Lowry and Chicago Tribune’s Clarence Page; and “This Is America With Dennis Wholey” (WHUT at 6 p.m.) talks to CNN’s Peter Bergen.

Sunday night, Discovery’s new nature documentary series “Human Planet” (8) starts with a look at rivers and oceans and later explores mountains.

New reality series “The Judds” (OWN at 9) follows mom-and-daughter duo Naomi and Wynonna on tour; Hank Stuever previews the show on Page C1.

“Masterpiece Classic: Upstairs Downstairs” (WETA and MPT at 9) picks up on the stories (six years later, that is) from the famous 1970 series.

Jeremy goes to investigate a scary creature in the third-season premiere of “River Monsters” (Animal Planet at 10).

The Comedy Awards (Comedy Central at 9) awards the funniest TV shows and movies around; NBC’s “30 Rock” leads with seven nominations.

— Emily Yahr