In 2011, a powerful earthquake off the coast of Japan unleashed a huge Tsunami that killed more than 15,000 people. But the worst tsunami of all occurred in 2004, just a day after Christmas, when a Tsunami delivered truly unprecedented chaos and destruction to South Asia, caused the death of an estimated 280,000 people across 14 countries. Using survivor testimony and fascinating expert insights, we’ll investigate these two unimaginable tragedies.

Many of our most densely populated cities are situated on the most seismically active faults on Earth. Through descriptions of survivors and fascinating expert insights, we examine two of the most catastrophic earthquakes ever to hit populated areas; a 7.0 magnitude earthquake that shook Haiti on January 12, 2010, and two earthquakes in Mexico City. Deadly, very destructive and impossible to predict, earthquakes are truly one of Mother Nature's most terrifying forces.

With a combination of torrential rain, powerful winds, and devastating storm surges, Hurricanes are among Mother Nature’s most calamitous natural disasters. Experiences of eyewitnesses and reports of experts, bring us closer to two of the worst hurricanes of modern times: Hurricane Katrina, which struck the Gulf Coast of America in 2005, and Hurricane Maria which hit Puerto Rico in 2017.

The Tornado is one of Mother Nature’s most extraordinary phenomena. These intense, rapidly rotating columns of air can attain wind speeds of more than 480 kilometres per hour, and have been witnessed on every continent except Antarctica. In this episode, we’ll focus on a part of the world which has been popularly known as “Tornado Alley;” a vast stretch of the Central United States that experiences an unusually high frequency of strong to violent tornadoes each year.

Nothing can be done to stop a landslide once it begins. We examine three of the most terrible landslides in recent history: In California, where heavy rains brought massive amounts of mud into barren, fire-damaged hillsides; in Venezuela, where a series of destructive landslides wiped out a 100-kilometer coastline; and in the small Welsh mining village of Aberfan, where a devastating landslide buried an entire primary school and the students taught there.

With increasing globalization and a world population that could grow to 11 billion in the next century, the risk of global disease is greater than ever before. In these episodes, we will look at the frightening recent outbreaks of swine flu and Ebola in places as diverse as West Africa, Hong Kong and East Germany. We will gain insights from some of the world's leading disease researchers such as Andreas Wack of London's Francis Crick Institute and discover why pandemics are the most insidious killers.

In large quantities, water has an absolutely destructive power. Apart from famines, floods have claimed more lives worldwide than any other natural disaster. With exceptional footage and impressive insights from extreme weather experts such as Dr. Christian Reinhardt-Imjela of Berlin University, we focus on one of the worst floods that has ever occurred along the Mississippi, as well as the recent catastrophic floods in New York City and the German Elbe. We will see why floods are so indiscriminate and devastating.

Volcanoes occupy a special place in our imagination and mythology. Stories about the destruction of the ancient Roman city of Pompeii are still fascinating. In this episode of Deadly Disasters, we will look at terrifying examples of active and dormant volcanoes from around the world, from Vesuvius in Italy to Kilauea on Hawaii Island. We will hear from some of the world's leading volcanologists about the farreaching consequences of these massive eruptions of ash and lava.

In places like Saudi Arabia, temperatures of over 40 degrees are nothing unusual, but when such a heat hit Russia in 2010, it claimed an estimated 56,000 lives. The heat wave in Europe in 2003 even killed 70,000 people. Using exceptional footage and exciting insights from experts such as Friederike Otto, Director of the Environmental Change Institute at Oxford University, we will examine two of the most burning heatwaves in recent history and find out why this force of nature is claiming so many lives.

With ice, snow, extreme sub-zero temperatures and heavy winds, the blizzard is one of Mother Nature's most effective killing machines. With interviews from leading weather experts such as Karsten Haustein of Oxford University's Environmental Change Institute, this episode of "Deadly Disasters" focuses on blizzards and extreme cold events from around the world, including historic blizzards that reached the Mid-Atlantic coast of America in 2010 and a shocking storm that struck Central Europe in 2017.

When flames roar up to 50 meters high and temperatures soar to 1200 degrees Celsius: wildfires are among the greatest dangers nature poses to humankind. Forest fires develop with terrifying speed, reaching up to 80 kilometers per hour, and engulf entire regions. The documentary explains the phenomenon using eyewitness accounts and scientific experts.

Many countries around the world are repeatedly affected by droughts. Not only does the lack of rain cause extreme water scarcity, but the excessive use of available water by the population also contributes to the problem. This documentary examines the most devastating droughts of recent decades. It looks to India, the USA, and Australia, showing how drought destroys harvests, ecosystems, and livelihoods.

Bill Gates once called them the "deadliest animal in the world": the mosquito. According to WHO estimates, around 750,000 people die every year from diseases transmitted by mosquito bites. The documentary portrays the Zika virus and malaria and shows how difficult it is to combat them: once viruses become resistant to medication, the chances of successful treatment are slim. Experts and survivors share their stories.

Earthquakes have immense consequences, causing cities to collapse and leading to mass homelessness. It makes no difference whether they claim thousands of lives in Los Angeles, California, or in L'Aquila, Italy.

Water is essential for human survival. However, it can also be destructive. Raging torrents and all-consuming floods are particularly dangerous, often causing people to lose everything they own.

In 2010, a volcano on Sumatra awoke after 400 years of dormancy. The eruption of this giant volcano caused the Indonesian islanders to fight for their lives, plunging them into fear and terror.

In the Alps, avalanches repeatedly broke loose during the 1950s, causing many deaths. More than 250 people lost their lives in the so-called avalanche winter when the enormous masses of snow thundered down the mountainsides.

El Niño is a complex weather phenomenon that occurs irregularly every two to three years. It triggers global disasters: hurricanes, floods, and droughts. Entire regions are destroyed, and thousands of people lose their lives. This documentary examines when and how this phenomenon triggered some of the deadliest tragedies and shows how it ravaged Peru, Africa, and Great Britain in the past.

Tropical cyclones form through an unfortunate interplay of forces over water and are responsible for some of the most catastrophic weather events in history. The destructive winds and torrential rain reach gigantic proportions. This documentary focuses on the most devastating cyclones, giving a voice to eyewitnesses and experts, and offering a uniquely intimate look at these storms.

Every continent has experienced this terrible phenomenon at some point in its history: famine. Thousands of people have died. And even today, many countries still live with this terrible tragedy. The documentary shows how hunger threatens the world today and how it particularly ravages Africa. It also explores the complex interplay of factors that trigger famines.