From the Great Pyramid at Giza to the towering skyscrapers of today, humans have engineered massive constructions for at least 5,000 years. But why? How do biology and human emotions affect our desire to build gigantic structures? Why were the earliest mega-structures almost always pyramids? Why do people have the urge to build tall, and how do mega-structures on earth echo a basic principle embedded in the very structure of the universe?
Off-grid settlers Jim, Nancy and John face being stranded without basic necessities when an avalanche hits and blocks the track. Roadmaster Hugh Evans battles freezing temperatures to get propane to the off-gridders before they literally freeze to death.
Flight takes more than wings. We need the right kind of air, the perfect materials cooked up over billions of years, and cosmic forces that are just right for us to leave the ground without tumbling off into space. Big History reveals how planet Earth is the perfect planet for flight.
Singer Kim Carnes returns to a farmhouse in Franklin, Tenn., where she once met a childlike spirit.
Lockup explore prison facilities throughout the United States, profiling notable inmates, incidents, and prison operations.
Funnyman Tracy Morgan was so impressed by his ATM shark tank that he’s coming back for round two! This time, it’s a new home for his beloved octopus. To get this tank installed on time, Brett and Wayde will have to move in with Tracy for a few days!
Vanessa feels guilty after encouraging Mandy to end things with Kyle, so she decides to try to make things right.
Frank is put in danger when his dinner companion, mob lawyer Angelo Gallo, is shot. Danny is a juror in a murder trial.
When Phineas and Ferb discover a commemorative coin from the 1903 Danville World’s Fair, Lawrence recounts the events of the festival to them, in which steam-driven devices were introduced and a set of kids, who were very much like them, were preparing for the highly anticipated event.
Debbie wants to enroll in business school but first must pass a qualifying exam; Reggie and Amber's relationship is tested.
Korra and company attempt to close the spirit portals before Harmonic Convergence.
The senators adjust to their new roommate, and his girlfriend, as preparations for the Congressional Delegation to Afghanistan continue.
As the re-election battles heat up the four senators travel to Afghanistan as part of a Congressional Delegation.
There's a new wireless in the Fisher household, but there's a murder on the airwaves. Dot suffers the realisation that she doesn't want to relinquish working for Miss Fisher when she marries.
Luke asks his adoptive mom, Christina, for information about his family history after he is assigned a report at school.
When Nick and Hank investigate a drowning death with mysterious marks on the victim’s ankles, they happen upon a group of water-bound Wesen with a deadly postcoital cuddle. Meanwhile, Rosalee starts unpacking her things at Monroe’s, and Captain Renard makes a startling realization about the possible identities of the Royal Baby’s parents.
Burt and Virginia introduce Natesville to a new bartering system called "Burt Bucks," that looks an awful lot like a pyramid scheme. Jimmy questions his masculinity after Sabrina saves his life.
A product that identifies home visitors; sending imaginative toys to kids through a subscription gift service; a slaw/salsa condiment; a cell phone app.
Sacred bones… Golden hats… And fragments of sacred objects thought to possess healing properties. All around the world, archaeologists have uncovered mysterious relics revered by ancient cultures for thousands of years. Now on display in museums, temples and churches, millions of people travel great distances just to be in their presence. What is it about these ancient objects that draws people to them? Could the truth of mankind's origins be found in the fabric, metal, stone and bones of our distant past? And could these mysterious relics really provide us with the ability to access divine or otherworldly power?