A New York City skyscraper that could topple at any moment; a city street that suddenly collapses; a modern-day crisis at Pisa's Leaning Tower; experts use cutting-edge technology to reveal if they can be fixed.

A skyscraper sinking into the earth, the world's strongest wall in crisis, and a deadly bridge are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

A railroad bridge on the edge of disaster, a nightmare in a fairy-tale town, and a massive cathedral in calamity are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

A skyscraper causing hellish heat in downtown Dallas, a swarm of sinkholes, and a landmark with a fatal secret are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

When America's tallest dam threatens to burst, a nearby town finds itself an hour away from total annihilation, and engineers use cutting-edge technology to reveal what went wrong and if disaster can be averted.

A fire in an American town that has been burning since 1962; a massive flood threatens Chicago's iconic skyscrapers; a town swallowed by the sea; experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

An abandoned Vegas-style getaway with a deadly secret, a ghost town sinking into the earth, and a passenger train on course for disaster are engineering catastrophes in need of repair and experts use cutting-edge technology to reveal what went wrong.

A skyscraper rained deadly bolts on the streets below, a highway on the brink of collapse, and a catastrophic landslide are engineering crises in need of repair. Experts use the latest science to reveal what went wrong and if disaster can be averted.

When catastrophe strikes Skylab, life on earth is threatened by a space station cratering toward earth, and NASA experts use cutting-edge technology to reveal what went wrong and if disaster can be averted.

A detonated building mysteriously refuses to fall, an American ghost town with a deadly legacy, and wind turbines on the brink of disaster are engineering disasters in need of repair, and experts reveal what went wrong and if they can be fixed.

When demolitions don't go as planned, engineers race for cutting-edge solutions to bring down the buildings that refuse to fall, and at work sites in Las Vegas & Russia, experts see if they can succeed where the world's most powerful explosives fail.

When demolitions don't go as planned, engineers race for cutting-edge solutions to bring down buildings that refuse to fall. At the world-renowned Pontiac Silverdome in Michigan, experts try to succeed when the world's most powerful explosives fail.

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.

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 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.

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.

As one of the largest construction cranes in the world lifts a one-million-ton section of roof for Milwaukee's Miller Park stadium, it suddenly collapses; experts use the latest science to investigate what went wrong.

When Hurricane Harvey hits Houston, 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.

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.

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.

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.

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.

New science reveals the inside story of the Apollo 13 disaster, and using the latest evidence, experts reveal 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.

A design flaw leaves 13 dead in a horrifying Minneapolis bridge collapse.

A massive sinkhole swallows millions of dollars of legendary Corvettes.

Experts investigate the engineering flaw behind a railway disaster.

Experts uncover what triggered a fatal malfunction at a Texas oil refinery.

Engineers investigate a deadly design flaw at a Canadian shopping mall.

Experts investigate the collapse of a New Orleans hotel construction site.

Experts investigate a deadly tragedy in an Oklahoma bridge collapse.

Experts investigate a deadly hotel walkway collapse in Kansas City.

A container vessel runs aground blocking a critical global trade route.

A vital Pennsylvania highway is destroyed after a catastrophic landslide.

A freeway intersection erupts in flames and collapses in San Francisco.

A railroad inferno takes down a historic river crossing in Arizona.

A routine bridge demolition in Cincinnati goes disastrously wrong.

A flash flood leads to a highway bridge collapse in the California desert.

A casino parking garage collapses with fatal consequences in Atlantic City.

A disastrous crane collapse falls across a landmark bridge in New York.

Icy flood waters destroy a landmark bridge in Pennsylvania.

A tragic bridge collapse suddenly takes down a symbolic Italian crossing.

Disaster strikes a new railway bridge as a crane collapses in Italy.

Tragedy strikes when a condominium complex collapses in Miami.

Experts investigate a deadly explosion at a fertilizer plant in Texas.

Experts investigate a condominium tower that collapses in Miami, Florida.

The construction of a new parking garage at a luxury waterside condo turns disastrous as it collapses in Jacksonville, experts use the latest tech to investigate and uncover critical design flaws and unsupported lower levels.

Experts investigate a vital bridge in danger of collapse in Memphis. https://www.youtube.com/watch?v=Id5E8eZg7nI

Experts investigate a deadly oil port explosion in Corpus Christi, Texas.

A disastrous crane collapse causes chaos on the streets of Manhattan.

A catastrophic fire threatens city-wide devastation in North Carolina.

Experts explore a tragic building collapse in Christchurch, New Zealand.

Experts investigate a major highway crossing collapse in Huron, California.

Experts investigate an iconic Bay Area bridge devastated by an earthquake.

Residents along the Pacific Coast Highway are cut off from the outside world after a storm causes a bridge to buckle. Experts reveal how the construction method of the old concrete bridge left it vulnerable to erosion on the steep coastline

An iconic telescope in Puerto Rico suffers a spectacular collapse.

A crane collapse leaves seven dead on a holiday weekend in Manhattan.

A morning commute becomes dangerous when a bridge collapses in Pittsburgh.

An aging dam in Nebraska fails after the area is pummeled by a superstorm.

A distinguished library is ravaged by not one but two disastrous fires.

Twenty people are killed after a hotel explodes in America's heartland.

A sinkhole envelops a residential street in the Bronx.

Tragedy strikes in San Juan when an explosion rocks a busy shopping center.

An explosion at a chemical plant in New Jersey kills five workers.