Smithsonian Channel schedule live

A look at the fate of United Airlines Flight 232 which crashed into Sioux City's runway in 1989; it caused a subsequent explosion that left 111 people dead.

The ships that made mighty empires, from the lone wolves that patrolled the high seas for imperial Britain to the USS Laffey's heroic WWII battle against kamikazes at Okinawa.

The history of the B-1 Lancer reveals how the Cold War bomber evolved to become one of America's most effective military aircraft.

Taking an aerial tour of Virginia.

Witness wild weather, emergency landings, animal invaders and pandemic panics at Alaska's Ted Stevens Airport.

An aerial tour over southern Greece celebrates its landscapes, its ancient and mythical past and the people who call it home.

A sky-high tour over Ireland reveals its towering cliffs, rolling hills, ancient ruins, and rich history.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

In Grindavik, Iceland, crews repair earthquake fissures, build lava barriers and track magma, gases and ground movement while divers inspect a damaged harbor pier in a town shaped

Cruise among the icebergs of Greenland and the Canadian High Arctic aboard the expedition cruiser Ocean Endeavour.

Hector Rail's trains haul timber to a pulp mill in Ostrand, Sweden on some of the most difficult railways in the country.

Follow the building of the Norwegian Breakaway at Germany's Meyer Werft shipyard; it is the largest ship they've ever built, and they have only 18 months to finish it.

The ORBIS McDonnell Douglas DC-10, the world's only flying eye-hospital, includes an operating room and a classroom.

In Chicago, twin concrete towers push the limits of high-rise design. Engineers conquer the sea to unite Sweden and Denmark. And in Sydney, Norman Foster and team take on the chall

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NAS