Buzz
For decades, we've been inundated with relentless warnings about how humanity is jeopardizing its future through wasteful practices and overdependence on fossil fuels. Here's a quick reminder: when Old Mother Nature is in a foul mood, she can bring more devastation to our fragile species in an instant than we could cause ourselves in over a hundred years of industrial damage. Her advantage? She has the time and the power to rebuild everything from scratch. Natural disasters have always been a part of Earth's story, but I’ll refrain from addressing the ones still too raw for many. Here's a timeline, in order:
10. Humanity on the Brink of Extinction – Nearly
Bipedal humanoids emerged millions of years ago, but the modern human species, Homo sapiens, didn’t last long before facing near extinction. Around 75,000 years ago, Lake Toba in Indonesia erupted in what scientists have termed a ‘mega-colossal’ super volcanic event. This explosion is believed to have been the largest eruption on Earth in the past 25 million years, and its magnitude nearly wiped out the human race entirely.
Up to 6,000 cubic kilometers of ash – enough to blanket the entire United States under 70cm of ash – were expelled into the atmosphere. The eruption occurred in a region that was sparsely populated at the time, but the release of enormous quantities of sulfur dioxide and the ash deposit, which was 25 centimeters thick, obliterated the verdant forests of Southeast Asia. Meanwhile, dust clouds blocked sunlight, leading to a global volcanic winter that lasted an estimated 6 to 10 years.
There was widespread destruction of plant life and severe droughts in tropical rainforests, causing entire animal species to go extinct. Some believe this event reduced the human population to just a few thousand survivors, mostly in Africa, with a core of perhaps only 10,000 breeding pairs. This genetic bottleneck, they argue, may explain the very limited genetic diversity found in the global population today.
9. Ancient Cataclysmic Floods
Throughout history, the Earth has witnessed numerous monumental flood events. For example, meltwater from retreating glaciers at the end of the last Ice Age formed the Caspian Sea and the Black Sea, transforming them into vast freshwater lakes. Around 8500 BC, the enormous Lake Agassiz in North America, the largest freshwater lake the world has ever seen, continued to fill with meltwater from the massive American ice sheets. This lake, which the current Great Lakes are only a remnant of, stretched an impressive 2,000 kilometers, forming an inland sea that reached from Hudson Bay in northern Canada all the way south to present-day Minnesota in the USA.
Eventually, the lake could no longer hold the immense volume of water from the melting ice, and when it overflowed, it released about 30% more water than all the world's lakes combined into the North Atlantic. The sudden influx of fresh water was so intense that it disrupted the warm Gulf Stream current in the ocean, leading to a 400-year decline in global temperatures, which plunged the planet into a brief ice age. Following this, rapid global warming caused sea levels to rise dramatically – by more than 30 meters.
Around 5600 BC, the Mediterranean Sea spilled over the Bosporus sill, which had been dry land up until then, turning the freshwater Black Sea into a vast saltwater inlet. Geologists estimate that 'ten cubic miles of water flowed into the Black Sea for about 300 days' – a volume 200 times greater than the water that flows over Niagara Falls today.
More than 600,000 square miles of land were submerged, prompting mass migrations of both animals and humans across Europe and Asia. It is believed that some of those migrating westward may have been the first to bring farming to Europe. The earliest signs of European agriculture can be found in the southeastern region of the continent.
8. The Transformation of Britain into an Island
Up until 6100 BC, Britain was connected to Europe by a vast land bridge of chalk downland that stretched from Kent to the Vale of York, extending eastwards toward Denmark. For 4,000 years, people traveled across it for hunting expeditions. This area is known as 'Doggerland' by scientists, named after the Dogger Bank, which lies beneath the North Sea. A river, the River Nord, flowed through this region, with the Thames, Rhine, and Seine all feeding into it.
Around 6100 BC, a massive underwater landslide along Norway's coast, caused by the retreating Ice Age, triggered a catastrophic event. Known today as the Storegga Slide, this collapse involved 290 km of coastal shelf plunging into the sea. The displacement of water generated one of the largest tsunamis in Earth's history. Gigantic waves surged across the North Sea, crashing into northeast Scotland and flooding up to forty kilometers inland before the water began to recede. This immense wave also submerged the low-lying land that connected Britain to Europe.
The flooding continued for months, peaking with a staggering one million cubic meters of water pouring into the English Channel every second— a flow a thousand times greater than that over Victoria Falls in Africa. Swift currents between the Atlantic and the North Sea deepened the rift, leaving only remnants of sandbanks. This mega flood altered the landscape permanently, isolating the people of the former 'peninsula' from the rest of Europe.
7. The Cataclysmic Deluge
Floods that devastate settled communities are common throughout history. Many cultures across the globe have folk tales recounting traumatic flood events, though there's no evidence to suggest they all occurred simultaneously or that a global flood ever took place.
In ancient Mesopotamia, the environment was harsh – scorching summers, minimal rainfall, and rivers that flooded unpredictably. Yet the agricultural system depended on these annual floods to rejuvenate the soil, which is why many Sumerian cities were located near flood plains. However, in some years, the rivers didn’t flood enough, and in others, they flooded excessively. Around 3100 BC, the Euphrates overflowed significantly and flooded the city of Shuruppak, along with much of the surrounding region.
Shuruppak was a major city at the time. Today, we would expect immediate responses like rescue helicopters and humanitarian aid, but in 3100 BC, such things were unimaginable. The residents would have suffered greatly, but little help would have come from outside. To outsiders, the flood and its aftermath might have seemed like divine punishment for the sins and transgressions of the people.
Although it was a local disaster in terms of global events, this flood had a significant impact on the Sumerians. Perhaps blending it with distant memories of the Black Sea flood, they incorporated it into their Genesis story, the Epic of Gilgamesh. It is from this tale that the tradition of Noah’s Flood in Jewish and Christian faiths emerged.
The Epic tells the story of Utnapishtim, a figure akin to Noah, and the narrative of animals being saved ‘two by two’ could be interpreted as desperate herdsmen trying to salvage their breeding stock, as these animals were essential to their livelihoods.
6. Thera – The Explosive Catastrophe
Around 1600 BC, the eruption of the volcano on the island of Thera (now known as Santorini) marked a defining event in the Bronze Age of the Eastern Mediterranean. This was likely the largest volcanic eruption in recorded history. The explosion devastated much of the island it had formed, leaving behind only barren land. Experts believe that the fallout from the ash would have shrouded an area of at least 300,000 square kilometers in total darkness, and the release of sulfur into the atmosphere caused significant cooling of the Earth's surface.
One of the first casualties of this eruption was the prosperous Minoan city and port of Akrotiri, which had been established on Thera. The disastrous event may have inspired some Greek myths and potentially influenced Plato’s tale of Atlantis. Although the residents of Akrotiri had already been evacuated before the final eruption, the massive tsunami triggered by the explosion would have caused immense destruction for nearby island communities and the coastal populations of Crete.
The ensuing volcanic winter likely contributed to the political instability in Egypt during this period and is even believed to have played a role in the fall of the Xia dynasty in ancient China. During this time, 'there was a yellow fog, a dim sun, frost in July, and the crops withered.' Some even suggest that the environmental upheaval caused by the Thera eruption was behind the ten plagues of Egypt as described in the Bible.
The plagues occurred prior to the Israelites' exodus, and traditionalists typically place the exodus around 1450 BC. While there is ongoing debate among scholars, radiocarbon dating suggests that the Israelites took Jericho around 1562 BC, which means their departure from Egypt could have coincided with the Thera eruption.
5. The Onset of the Middle Ages
In 535-536 AD, the Earth experienced a dramatic climate cooling event, believed to have been triggered by a massive dust veil from volcanic eruptions in the tropics. Science writer David Keys posits that this event could have been caused by a supervolcanic eruption, equaling the force of millions of Hiroshima-sized bombs. Its impact was felt across the globe.
A Chinese court journal documented 'a huge thunderous sound coming from the south-east,' while across the world, a Hopi elder recounted, 'there was a big noise heard all over the Earth.' In Indonesia, the Pustaka Raja Purwa described, 'then came forth a furious gale that darkened the entire world.' From Mongolia to Constantinople, records tell of a sun that lost its brilliance and warmth for nearly two years, resulting in abnormal weather, crop failures, and triggering plagues, famines, and widespread migrations.
Keys suggests that these catastrophes may have contributed to the downfall of the great Mexican city of Teotihuacan and possibly played a role in the emergence of Islam, which gained prominence less than a century later. Additionally, he theorizes that these events could have been a major catalyst for the 300 years of social unrest in Europe, a period once mistakenly called the 'Dark Ages' but now understood as the early Middle Ages.
Volcanologist R.B. Stothers points to the eruption of Rabaul in Papua New Guinea as the potential cause of these upheavals, while others argue that it may have been an early super eruption of Krakatoa in Indonesia.
4. The Year Without a Summer
1816 became known as the 'year without a summer,' and the year after was often referred to as 'eighteen hundred and frozen to death.' The cause was the eruption of Mount Tambora in Indonesia, which violently exploded, leading to the coldest year of the nineteenth century and one of the coldest years on record.
The explosion was four times stronger than that of Krakatoa and 52,000 times more powerful than the atomic bomb dropped on Hiroshima in 1945. In the Far East, 92,000 people perished, mostly from starvation due to the destruction of crops and livestock. Dust and sulfuric ash clouds sent into the atmosphere blocked sunlight, disrupted weather patterns, and caused a drop in global temperatures for three years straight. In India, the usual monsoon rains failed to fall in their expected regions, resulting in a devastating cholera epidemic among those forced to use polluted, stagnant water supplies.
Europe suffered more than the USA, likely due to its denser population rather than the weather conditions. Crop failures sparked food riots in France and Switzerland, and at least 200,000 people died from a typhus epidemic. Meanwhile, the near-total destruction of crops in New England prompted the first large-scale migration of farmers to the Midwest, forever changing the course of American agriculture.
3. The Future
It is widely recognized that the ground beneath Yellowstone National Park in Wyoming holds the potential for a massive super eruption similar to the one at Lake Toba over 70,000 years ago. Geo-hazard expert Bill McGuire, who has researched natural disasters, believes that catastrophes will continue in the future. He also outlines other potential threats, including:
Mega-tsunami: The western coastline of La Palma (Canary Islands) is on the brink of a collapse into the ocean. Once this happens, the eastern coastal cities of the United States will be hit by tsunamis towering at 50 meters high.
Earthquake: A major earthquake in Tokyo, similar to the one that struck in 1923, would cause an estimated $7 trillion in damage and could potentially trigger a global economic collapse.
Asteroid Impact: A collision with an asteroid between 1 and 1.5 kilometers in diameter would result in the deaths of at least a quarter of the world's population. The survivors would be forced to live in conditions resembling the Middle Ages.
Possible Global Warming: By the end of this century, the Earth's temperature may exceed any point in the last 150,000 years. The consequences of this remain unknown.
Possible Global Cooling: Though only 600 generations have passed since the end of the last ice age, the Earth could be heading toward a return to full glacial conditions. We are currently in the Pleistocene glaciation, an ice age. McGuire suggests that all that’s needed to trigger rapid global cooling is a catalyst, and ironically, global warming could serve as just that trigger.
But don’t worry too much. If any of these events are set to happen, it’s unlikely they’ll occur before December 2012!
2. Tokyo Disaster
Over the past thousand years, earthquakes have caused the deaths of at least eight million people globally. One of the most significant earthquakes, registering 8.3 on the Richter scale, struck Sagami Bay near Tokyo in 1923. Although it wasn’t the most powerful earthquake Japan had experienced, its proximity to a densely populated area made it the most devastating.
Shockwaves and falling debris in the city toppled numerous cooking stoves, and with most buildings being made of wood and paper, fires quickly ignited. The flammable materials stored in warehouses and industrial facilities further fueled the flames, and driven by the wind, the fires merged into intense firestorms that raged for two days and two nights.
The fire service, despite being well-trained, was powerless due to broken water mains that left them without water. Around 30,000 people, trapped in the Honjo and Fukagawa districts, fled to an open area for safety, only to be consumed by the flames. Once the fires had subsided, Japan’s key business areas lay in ruins, with up to 150,000 people lost. While it was a national catastrophe for Japan, it largely went unnoticed by the rest of the world.
1. The Classic Story
Krakatoa, often mentioned in discussions about volcanic events, is perhaps the most famous eruption in modern history, making it impossible not to include. Situated on the island of Rakata in the Sunda Strait between Java and Sumatra, the volcano erupted violently on August 27, 1883, sending shockwaves heard 3,500 miles away in Perth, Australia. The eruption’s shockwaves circled the globe seven times, and ash clouds were ejected 80 km (50 miles) into the sky.
The 23-square-kilometer island, which had once stood at 450 meters above sea level, was nearly obliterated by the eruption, leaving much of it submerged 250 meters below the sea. Pyroclastic flows destroyed ships up to 40 kilometers away. The deadly combination of volcanic ash, pyroclastic flows (superheated clouds of dust and gas traveling at 100 mph), and the resulting 40-meter tsunami had catastrophic effects on nearby islands and coastal areas.
The official death toll in the areas directly affected was reported as 37,000, though this figure only accounted for those living along the coasts of Java and Sumatra. Some estimates suggest that the total number of fatalities could have been up to four times higher. Global temperatures dropped by 1.2 degrees Celsius, and the world’s weather patterns remained erratic for the following five years. Worryingly, Krakatoa is still active and continues to rebuild itself, with the 'child of Krakatoa' emerging above the sea in 1930.
