The Ship of the Imagination makes a final journey to explore one of the biggest mysteries of the universe: dark energy. Meet one of science's greatest unsung heroes, Fritz Zwicky, whose prediction of supernovas paved the way for our larger understanding of dark energy, the unknown force in the universe that overwhelms gravity on the grandest scale. On our final voyage, discover the romantic message embedded in Voyager's Interstellar Golden Record and contemplate the spiritual experience of life on Earth as our cosmic journey concludes with Carl Sagan's unforgettable meditation, The Pale Blue Dot.
After surviving a visit from IBM, Joe's team must overcome internal differences and begin the technical feat of building the new machine.
After Sarah reveals her shocking secret to George, their relationship is thrownapart. The Christmas soirée causes Jack's intimacy issues to be brought out.
Mary struggles when she realizes that Abe is a spy working for the other side. Ben and Caleb hope to save Patriot families when they carry out a raid on Setauket.
Kiera finally learns the truth about John Doe. Alec must make a difficult choice between business and family. Liber8 is rocked to the core by new information about their mission.
Anticipating a visit by a General, Cody pushes Pete to maintain insanely high standards among the Rear D. Meanwhile, Jill gains newfound respect for Randy after she is paired with him to prepare for the inspection.
Nicholas asks Marisol a surprising question; Opal asks Ethan for help; Genevieve invites Zoila and Javier over for dinner; Evelyn and Adrian try to outsmart each other; Ty misbehaves; Lucinda and Rosie argue.
Justice comes in the form of a letter as the team at the Dead Letter Office solve clues to deliver not only a letter, but an unspeakable truth that has been buried for years.
Vanessa recalls her past and the events that ultimately lead to Mina's disappearance.
Jackie learns about a DEA investigation at the hospital that will require her to take a urine test, so she plots to get around it. Meanwhile, Kevin and Mia plan their wedding; the homeless nun returns in worse shape than ever; and Coop and Carrie find a way to skirt their no sex in the hospital rule.
Kieren faces his darkest fears when he turns rabid. Danger descends on PDS sufferers.
Increase Mather makes it his first order of business to catch a real witch, and starts by pinpointing a prominent figure from Salem’s most sinful district. Mary worries that Increase will detect that his old friend George is under a spell and enlists the help of Isaac to deter Increase from uncovering the truth. Meanwhile, accusations within Salem intensify and Cotton must deal with a painful turn of events – and Anne’s suspicions of her father reach a fever pitch.
Po's qi is out of balance, and Shifu and wise Master Lun attempt to re-harmonize the panda using the ancient tradition of musical kung fu.
A trip to Thailand inspires Giada to create an exotic dinner at home. On the menu: curry, naked spring rolls, and a sweet iced tea.
As the worst winter in decades rages across the nation, the Mountain Men must fight to stay on top of the food chain. In the Yaak Valley, the growing wolf population comes knocking on Tom Oar's door, and quickly turns into a blood feud. In Alaska, Marty Meierotto's traps are coming up empty, causing him and his family to regroup and figure out how they're going to survive the season. In the Ruby Valley of southwest Montana, Rich Lewis bags enough meat to survive the winter, but his battle has only begun as hungry predators catch the scent. In North Carolina, Eustace Conway struggles to bring a 100-year-old sawmill back to life to keep his property in the black. And in New Mexico's Cimarron Valley, Kyle Bell puts his 10-year-old son's mountain man skills to the test on his first hunting trip.
In the season five premiere, the team go to Kentucky to inspect casts of alleged Bigfoot tracks, and spend some with Ernie Brown Jr., aka Turtleman, who recalls a chilling childhood encounter with a mysterious beast.
The family begins to worry as Kourtney is showing a lack of emotions. Khloé's house has sold and it's time for her to move out. Kris tries to show Kim that she still has what it takes to be a good mom and manager.