With two crashes in five months of the new 737 4th Generation a design flaw seemed likely. We look at how Boeings focus on cost-avoidance, grandfathering and bending probabilities during design would ultimately cost 346 people their lives.

In 2000 the small township of Walkerton Ontario witnessed the largest outbreak of E.Coli infections in Canada's history. The water utility claimed the town water was safe, but it wasn't and many people paid with their lives.

The evening before Christmas Eve in 2015 saw a widespread blackout of the power grid across the Ukraine. We look at how a cyber-attack on electric utility companies in Europe, changed how cyber-security is regarded in control systems, forever.

As part of Rio's preparations for the Olympics in 2016 a cycling pathway was built adjacent to a narrow, congested roadway along a picturesque shoreline. When a section collapsed only months before the opening ceremony killing two people, the world looked on with growing concerns about the imminent Olympics.

In 2009 an AirBus A320 departing LaGuardia Airport in New York suffered a dual engine failure due to a bird strike during takeoff. In a highly improbable event an equally highly improbable landing in the Hudson River shocked and amazed the world. We look at what went right on Flight 1549.

In 1986 an unremarkable building in Singapore collapsed killing dozens of people. We look at how the supervision of the construction and the design itself resulted in a structure that was at best critically stable, and ultimately one that could only ever fail.

On the 27th of June, 1988 in central Paris a runaway train collided with a stationary train in Gare De Lyon station, claiming 56 lives and injuring 60 more. Whilst the court found the driver guilty and sent him to jail, was he solely to blame? We look at how poor design decisions made Gare De Lyon inevitable.

In December, 1984 in the city of Bhopal in central India, a Union Carbide Pesticide plant would fail and release tonnes of toxic gas into the city, killing thousands of people. It was the worst industrial disaster in human history. We follow the threads and trace back the root causes behind the incident at Bhopal.

In 2010 an Oil Drilling Rig suffered a catastrophic well blowout, killing 11 people, destroying the rig and leading to the worst maritime oil spill in history. It all happened a few hours after the well was declared safe and ready for handover. We look at the human and financial factors that led to the incident at Macondo.

In 2003 the Space Shuttle Columbia launched successfully but after its mission was completed burned up on re-entry with the loss of all onboard. We look at how normalisation of deviation blinded many at NASA to a risk that had existed since 1981.

When two trains collided head on at Kipton, Ohio in 1891, it was a wake up call for the railroad industry in North America whose impacts would be far-reaching and would lead to a new timekeeping standard that was unprecedented.

The largest nuclear incident in human history released an estimated 400 times the radioactive material compared to Hiroshima and Nagasaki. It all happened because of a test that was delayed by one shift, or was it the ultimate inevitability of a flawed reactor design?

A turning point in control systems user interface design and alarm management happened in an unlikely place that few have ever heard of. We look at what went wrong at Milford Haven.

On the 19th of July, 1985 in Tesero, Northern Italy, a tailings dam gave way and killed 268 people. With the most common tailings dam design in the world, what went wrong and how widespread are the risks?

In 2015 at Alton Towers in the UK, The Smiler Rollercoaster experienced a major incident leading to severe injuries for multiple riders. We look at how pressure to get the ride running again and mis-communication defeated the system designed to protect the riders.

In 1952 a fog in London left 4,000 dead in just 4 days but many more would die before the causes could be rectified. Worse than that, it had happened before and it’s happening again right now, somewhere else.

On March 28, 1979 Unit 2 of the Three Mile Island Nuclear Plant in the United States of America an incident would lead to a partial reactor core meltdown. Many blamed the operators for stopping the reactor cooling system but the real root causes showed a known flaw in the design and alarm flooding had blinded the operators to what was actually happening.

In 1977 on the small island of Tenerife two 747 Jumbo Jets collided on the runway in poor visibility. A miscommunication clearly occurred, but even today, the same elements still exist and it could happen again.

The Sampoong Department Store in South Korea collapsed in 1995 killing over 500 people. The investigators were shocked to find just how many rules had been broken but the true root cause might have been something more innocuous.