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How Did They Build That?
S3, EP3 "303"Engineers grapple with an apartment building, ripped apart by a man-made canyon; the Gateway Arch takes shape in St. Louis; an unpromising plot in Copenhagen, Denmark, is transformed by a gleaming new triangular office.
How Did They Build That?
S1, EP5 "Supertalls & Firehouses"Alien port authority in Belgium; ultrathin skyscraper in Manhattan; hanging museum in Scotland.
How Did They Build That?
S3, EP10 "Boxes & Birds"The American Museum of Natural History in NYC gets a cave-like extension; an arts center inspired by migrating birds is built on a lake in China; Boston University gains a fossil-free, Jenga-like tower.
How Did They Build That?
S3, EP5 "Heights & Balance"A 1.2-million-square-foot office building balances precariously on a 39-foot wide base in Chicago; a building named Pterodactyl lands on top of a Los Angeles parking garage; the world's longest suspension footbridge.
How Did They Build That?
S5, EP4 "Tunnels & Towers"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 challenge of a new metro station that can't disrupt the busy streets above.
How Did They Build That?
S3, EP8 "Subways & Sightlines"A sculptural high-rise with rippling balconies breaks the mold in Chicago; Mammoth machines bore 26 miles of tunnels for an underground railroad beneath London's city streets.
How Did They Build That?
S2, EP9 "Mirrors & Marble"Visiting Australia's One Central Park, the Oslo Opera House and the California Academy of Sciences in San Francisco to reveal their architectural secrets.
Air Crash Investigation
S25, EP7 "Deadly Climb"In 1985, a DC-9 airliner crashes seconds after takeoff from Milwaukee.
Air Disasters
S20, EP25 "Landings Gone Wrong"Relying on instinct rather than the rule book, three flights end in tragedy when crews improvise on their final approach.
Air Disasters
S20, EP3 "Collision Course"A passenger ferry sinks after crashing into rocks off the coast of a Greek island, killing 82; it leads to a shocking investigation.
Air Disasters
S16, EP8 "Caught in a Jam"A commuter turboprop crashes onto hilly terrain in New Zealand; the search for answers inevitably leads to the cockpit.
Air Disasters
S13, EP2 "Death Race"When a modified WWII fighter plane crashes into the crowd at a Nevada air show, investigators struggle to find the cause.
Air Crash Investigation
S25, EP6 "Cabin Chaos"After a Chinese airplane lands at a top-secret US Air Force base, the search is on for the cause of a deadly rollercoaster ride in the sky.
Air Disasters
S13, EP10 "Slam Dunk"A quick trip from Washington D.C. to Ohio in 1994 turns deadly when pilots of a twin-engine turboprop attempt a risky landing.
Air Disasters
S9, EP5 "Fatal Delivery"The two-man crew of a UPS cargo jet must attempt an emergency landing when a fire in the cargo hold fills their cockpit with smoke.
Air Disasters
S8, EP5 "The Final Push"Investigators try to find the cause of two similar air crashes that happened nearly 12 years apart.