Beneath the streets of Seattle, a tunnel-making monster machine comes to a sudden, problematic halt; experts use the latest cutting-edge technology to perform one of the world's greatest and most dangerous engineering rescue missions.

Architectural experts and engineers uncover catastrophic structural flaws in a Scottish suspension bridge. After undergoing a rigorous inspection, they discover this landmark of engineering may be crippled into an early retirement.

A newly-erected monument to the 20th century takes a dramatic fall from grace in Paris as engineers and other construction experts discover catastrophic design flaws, proving that this Grand Arch was not constructed to stand the test of time.

Engineers and other energy experts encounter disastrous flaws in the original design of wind turbines, and having underestimated the power of mother nature, they discover unexpected signs of catastrophic damage to these massive machines.

Geologists and other experts examine the engineering decisions behind a catastrophic landslide that destroyed a small and once-thriving Greek village in Ropoto, sending dozens of homes and buildings crumbling down the picturesque mountainside.

A pair of Apartment complexes in England resist demolition and baffle the experts; The Pontiac Silver dome in Michigan shows demolition experts who the boss is; In Glasgow, Scotland 6 high rise apartment blocks are scheduled for demolition; In Vordingborg, Denmark a silo that is set to be demolished goes its own way; In Brisbane, Australia a silo scheduled for destruction fails to go as planned.

New science reveals the inside story of the Apollo 13 disaster; using the latest evidence, experts explain what really went wrong and how NASA saved the lives of the three astronauts stranded in space in a life-or-death race against the clock.

The Deepwater Horizon oil rig drilled into the deepest oil reserves on the planet, but a sudden explosion on-board led to the worst oil spill in history; experts reveal what went wrong and how cutting-edge science finally fixed this catastrophe.

Montreal's Olympic Stadium was an ambitious engineering project with a striking Space Age design, but it's distinctive roof has caused over one billion dollars in cost overruns; experts reveal what went wrong and how cutting-edge science can fix it.

When a massive sinkhole almost as long as a football field suddenly opens in Florida, it swallows two homes and condemns six others; now, experts use cutting-edge tech to reveal the secret culprit behind this engineering disaster.

Boston's Big Dig was one of the most ambitious engineering projects in history, but in 2006, a fatal collapse in one of its tunnels put the ambitious project in doubt; experts reveal what caused this engineering disaster and how it was fixed.

When the innovative design of an iconic Chicago skyscraper leads to tragedy, experts must apply cutting-edge tech and the latest engineering methods to fix an urgent, life-or-death problem.

When Hurricane Harvey hits Houston, Texas, in 2017, the city is overwhelmed by four feet of rain in four days, causing catastrophic flooding and billions of dollars in damage; experts use cutting-edge tech to discover what went wrong and how it can be fixed.

As Big Blue, one of the largest construction cranes in the world, lifts a one-million-pound (500-ton) section of roof for Milwaukee's Miller Park Stadium, it suddenly collapses. Experts use the latest science to investigate what went wrong.

After a giant suspension bridge begins to violently rock, it suddenly collapses, marking one of the most iconic engineering disasters of all time; using the latest science, experts reveal what went so catastrophically wrong at the Tacoma Narrows bridge.

When a dam breaks during routine maintenance, engineers fear a catastrophic flood; experts use the latest science to investigate what went wrong and how a simple miscalculation could be to blame.

When a brand-new bridge suddenly collapses in Miami, several die in a horrifying calamity; experts use the latest science to investigate what went wrong and how an innovative bridge-building technique could be to blame.

When an oil rig in Louisiana drills into something unexpected, a cataclysmic event is unleashed, causing a lake to suddenly disappear; experts use the latest science to investigate what went wrong and how it can be fixed.