Doomsday: 21 Ways The World Could (But Probably Won't) End

**The End Of The Mayan Calendar **
In case you haven't heard, the end of the Long Count Mayan calendar is set for December 21 this year. Rather than looking at this date as an ancient celebration of New Year's Eve, people around the world have attached a more ominous event to this day--Doomsday. With destiny drawing near, many believers are preparing for the worst. Popular "end times" scenarios range from the disturbingly plausible to pure science fiction, but enough people are worried about it that NASA decided to put out a video explaining that the world won't end. Let's take a look at the most commonly feared vehicles of our destruction.
Worldwide Famine
The Threat: A shortage Of safe food for a growing population

The 2012 heat waves and drought in the United States and Africa have left two continents with less food than normal this year. What if crop loss and famine become a regular occurrence? What if something worse than weather caused a run on food?** The Preps**
Governments and individual citizens worldwide are taking their own precautions against any form of food supply disruption by stockpiling their own food stores. Not surprisingly, interest in home vegetable gardening and canning food are also making a strong resurgence. FEMA now recommends a two-week supply for everyone. If this scenario troubles you, then stock up for longer than two weeks.** The Odds**
The odds of some sort of food shortage in the world are 100 percent. In Chad and other countries of western Africa, 18 million people are suffering from a food shortage as we speak. But the odds are low that we will see a significant food shortage in the US due to the weather anytime soon. The odds of a shortage of safe food are anybody's guess if the disruption in the supply chain results from terrorist tampering, hyperinflation, or a radiological event.
Water, Water Everywhere
The Threat: Tsunamis and flooding
Storm-related flooding and earthquake-induced tsunamis pose the threat of loss of property and loss of life to people living in low lying and coastal areas around the globe. The Preps
Precautions against flooding are diverse. Planning ahead can begin by choosing a place to live that is higher and dryer than the surrounding area. Flood insurance may help cover your property losses, but the only reasonable way to safeguard your life is to keep one eye on the weather, and one ear to the radio for emergency broadcasts about storms, flooding, and tsunamis in your area. The Odds
Earthquakes and storms cause flooding each year. The worst of the 2012 floods occurred in southwestern Russia in early July. It claimed 144 lives and the homes of nearly 13,000 people were damaged or destroyed in that flood. Your odds will be based on where you live.
Tech Meltdown
The Threat: Cyber terrorism

With so many computers and computer hackers in the world, concerns over cyber terrorism have governments and big business worried about national and global computer security. These aren't just simple computer crimes like bank account hacking and identity theft. William L. Tafoya, Ph.D., one of the FBI's cyber terror specialists, explains that "acts of cyber terror…impact society--even the nation--not just an individual, the business sector, or government agencies." (link to FBI paper The Preps
Unless you are already living an Luddite's lifestyle, there is nothing that an individual can do to keep a localized, national, or global computer meltdown from affecting his or her way of life. Sorry. The Odds
It is impossible to predict when or if a major cyberattack will ever happen. Dr. Tafoya simply concludes that "law enforcement agencies should be prepared to deal with the aftermath of hard-to-forecast, but not regularly reccurring, cyberattacks on the nation's critical infrastructure."
Crude Shortage
The Threat: A worldwide oil crisis

In some circles, the question of whether the world's oil fields have reached "peak oil" is hotly debated. If we have used up half of our world's oil in the past 100 years, what kind of crisis would we face if the supply diminishes as world populations continue to grow? This socioeconomic scenario may not seem as scary as an asteroid impact or world war, but the effects could be just as far reaching. The Preps
If the supply of oil dwindles, or if warfare or politics put a choke hold on the petroleum supply, you can expect the price of everything to go through the roof. It's certainly not practical to create your own fuel tanks and stock up now, but it may be smart to wean yourself off things that require petroleum, like heating your home with oil. The Odds
The easily extracted oil will almost certainly run out at some point, and there is no other known fuel that is as energy dense as oil. The earth's crust is petroleum rich, but once the easy pickings are gone, oil and gas will cost more to obtain and the collection of it may bring more environmental damages. The real questions are simple: When will the oil run out, and how will it be replaced? I think the answers are already known, but we aren't allowed in the meetings of the people who know such things.
Global Warfare
The Threat: World War 3

Fears of a third World War have been inspiring preppers since the end of the last World War. This is easily the scariest event on our list, because it could happen at any time for any number of reasons, if diplomacy ever fails. The Preps
The preps for WWIII are difficult to even discuss. Bunkers and years' worth of stockpiled food and water are a good start. The Odds
Some would say that WWIII is absolutely going to happen, it's just a matter of when it will occur, who will be involved and why. America and her allies have many enemies, some old and some new. Some Biblical scholars will point to Armageddon as the third (and final) world war. I'd say it's too close to call, and too unthinkable to dwell on. Photo: atph
The Walking Dead
The Threat: Zombie apocalypse

Zombies are everywhere we look these days, in videogames, on television and in the movies. Going a step further, some folks believe that zombies will someday be a real threat to the world. In essence, zombies would be an undead case of life imitating art. The Preps
You could join a zombie hunting group, like ZERT, the Zombie Eradication Response Team. You could also study the CDC's guide for zombie preparedness.
The CDC's tongue-in-cheek guide espouses the idea that "if you are generally well equipped to deal with a zombie apocalypse, you will be prepared for a hurricane, pandemic, earthquake, or terrorist attack." The Odds
The likelihood of an actual zombie outbreak is thankfully low, since zombies don't actually exist. And I think it's great that people can gather together under the mantle of being a zombie club and perform beneficial charity work as they do. Some clubs, like Zombie Squad (link, operate as a non-profit, having fund raisers and organizing volunteers for real charities such as the American Red Cross and Habitat For Humanity.
Pole Shift
The Threat: The shifting or reversal of Earth's magnetic poles

Pole shift and pole reversal predictions have arguably the most colorful and diverse group of backers of any version of Doomsday. Some "abductees" have said that aliens told them the poles would shift. Spiritual medium Edgar Cayce predicted it would happen, too. Even well-known scientists have published peer reviewed papers saying that it would happen. Polar shift proponents date back as far as Charles Étienne Brasseur de Bourbourg, who in 1872 wrote an article suggesting that he had interpreted ancient Mexican codices that told how the earth's axis would tip and cause periodic cataclysms. The Preps
If a pole shift or reversal happened within a short period (say weeks, days, or hours), earthquakes and tsunamis would be the primary dangers to address. Other hazards of pole shift could include temporary vulnerability to incoming solar radiation, volcanic eruptions and radical climate change. Prep as you would for earthquakes and storms, and you should have this one covered. The Odds
The odds of a polar shift are a little tricky to explain. The poles do drift a little each year, and there is scientific proof of polar "wander." There is also geological evidence that the magnetic poles have been in radically different places over the past millennia. In the entire Earth's history, polar wander of approximately 55 degrees may have occurred twice, but the poles have not deviated by more than about 5 degrees over the last 130 million years. Honesty, I wouldn't sweat this one. Zombies seem like a more plausible threat than pole shift.
Epic Eruption
The Threat: Super volcano

The caldera under Yellowstone National Park could erupt as a super volcano. China's Changbaishan Volcano, Indonesia's Mount Lokon, and the Mud Volcano of Azerbaijan could also blow up. Entire continents could be covered in ash as smoke darkens the skies. The Preps
If you are living downwind of a potential super volcano, treat this like a nuclear winter scenario. In the short term, you'd need breathing apparatus to filter out the dangerous volcanic ash (which could cut up your lungs like glass dust). For the long term, you'd need lots of food and drinkable water. The Odds
According to the U.S. Geological Survey, a volcano in Indonesia erupted 74,000 years ago, darkening the world's skies for 11 years and wiping out most of the life on earth. Many geologists predict that the planet is due for another big one. The good news is that volcanos create recognizable seismic warnings, giving us time to evacuate or at least hunker down for such a disaster. The National Park Service has stated that "although [Yellowstone] eruption is theoretically possible, it is very unlikely to occur in the next thousand or even 10,000 years."
Shaken to the Core
The Threat: Mega earthquake

Massive earthquakes have happened before, and many little earthquakes happen every day. What happens if a big one hits the U.S.? Will it drop California into the Pacific? Will the Gulf of Mexico flood into the Midwest? The Preps
Earthquake preparedness is pretty much "by the book." You need structurally safe shelter, clean water, first aid supplies, food, communications, and all the other usual suspects. For greater details, check out FEMA's disaster kit guidelines and supply lists. The Odds
The chances of a massive, city-destroying earthquake are slim, but there is always a chance. The U.S. Geological Survey's earthquake website allows you to track active earthquakes, and even generate an earthquake probability for your area based on your latitude and longitude.
Boulder Bombardment
The Threat: Asteroid strike

A hunk of space rock only 6 miles wide is believed to have wiped out the dinosaurs 65.5 million years ago; and there are plenty more boulders where that one came from. Even a small asteroid strike could set off a chain reaction of tsunamis, earthquakes, and volcanoes, in addition to the localized destruction at the impact site. The Preps
Prepping for an asteroid impact falls somewhere between prepping for volcanoes and earthquakes. There might be harmful dust in the air, as with a volcanic event. You may see earthquakes and tidal waves nearer to the actual strike location. Prep as you would for an earthquake, and treat yourself to some respirators. The Odds
Since there are literally hundreds of thousands of amateur and professional astronomers peering at the night sky, I don't think any big asteroids are going to slip past the goalie unnoticed. And for the first time in the earth's history, this planet's inhabitants may have the technology to address the threat of asteroids, meteors, and comets. This one looks pretty far-fetched.
A Greater Depression
The Threat: Economic collapse

Since we all live in a global village of trade and interdependence, drastic loss in value of our dollar or a major trading partner's currency could send us into a situation much worse than the Great Depression of the 1930s. The Preps
Many preparedness enthusiasts plan for economic hard times by stockpiling goods that have a high trade value. If the dollar is worthless, what would have value? The quick answer is the necessities and the luxuries. While people need food, safe water, medicines, and clothing; people will also be foaming at the mouth for caffeine, nicotine, alcohol and a host of other things that humans cannot seem to live without. The Odds
All prior economic systems that have ever existed eventually failed. True story. But the silver lining is that most of these systems just changed, from one valuable to another or from an old currency to a new one. Let's hope the odds are in our favor and that we don't see the Great Depression Part 2 or some ridiculous One World Dollar in our lifetime.
Worldwide Sickness
The Threat: Pandemic disease

The super flu, smallpox, or some new contagion strikes our highly mobile modern world and spreads like wild fire, killing or incapacitating the infected, and grinding government and commerce to a halt. This has been the plot of several sci-fi movies, and it has happened before in real life--many times. Just a few historic pandemics include the Spanish Influenza of 1918 (link, the smallpox brought to the Aztecs and other early Americans from Europe, the Black Plague in 1400s Europe and the Plague of Athens dating all the way back 430 BC. The Preps
Pandemic preps include gathering supplies to survive a month or more, as well as abundant safety gear like masks, gloves, and disinfectant. If a pandemic should occur, barricade yourself and stay home for a month. The Odds
The odds don't look good for us. Neither does our track record. Humans are absolutely filthy creatures, and this category doesn't exclude altered or man-made pathogens such a biological weapons. Scary.
Nuclear Nightmare
The Threat: Radiological event

Whether a nuclear reactor melts down, a dirty bomb goes off, or somebody pops a nuclear warhead, we'll be faced withthe same problem: dangerous radiation. The Preps
Time and distance are your best friends when it comes to surviving a radiological hazard. Distance yourself from the area of contamination as quickly as you can. Distance yourself from your contaminated clothing and gear too. Time is also your best friend. Hour by hour, radiation dissipates. If you couldn't make it to your nearest fallout shelter, shelter in place for as long as you can. The Odds
Three Mile Island, the Chernobyl nuclear facility and the Fukushima power plant have all created modern nuclear disasters, and put dangerous radiation into their neighboring areas. The abundance of radioactive material in the world is also making it easier each year for someone to build a dirty bomb. Let's hope the right people keep protecting us from this one.
Shock to the System
The Threat: Electromagnetic Pulse

EMPs happen when a nuclear weapon is detonated high in the atmosphere. These pulses can also be generated by non-nuclear devices like an explosively pumped flux compression generator, which has a very limited range due to its chemical explosive component. The Preps
Get your tin foil hat ready for this one, because all of your electronics are going to get fried if an EMP occurs near you. The precautions to take for EMPs are simple and low tech. Keep all of your electronics in an insulated metal cage (Faraday cage) or similar container which is protected and grounded. Of course, you can't use your stuff while it's crated up, and you're probably not going to get any warning that an EMP is coming, so the logical--albeit expensive--thing to do is to have duplicate electronic gear that is shielded at all times. The Odds
The odds of an EMP attack are anybody's guess. This could prove to be the weapon of the future, as it would leave a tech-addicted culture helpless against attack or invasion, while leaving the land safe for growing crops and the infrastructure relatively intact. Creepy.
Global Cooling
The Threat: Another ice age

The last glacial period in earth's history slowly melted away about 12,500 years ago. While some folks believe that we are overdue for the next ice age, keep in mind that the last ice age was a long period of cold temperatures with ice sheets covering large parts of the Earth, lasting roughly 100,000 years. The Preps
Unless you want to burrow toward the center of the earth where it is still warm, you'll have to pack up and move to the equator to find a warmer climate. And you'll probably have the rest of the world to keep you company there. The Odds
The likelihood of large sheets of ice covering the world's land masses is roughly zero. Since the earth's orbital variations cause these cold periods, and these variations are predictable, computer models suggest that the current warm climate may last another 50,000 years.
Heating Up
The Threat: Global warming

This controversial concept carries a host of possible threats. The earth's alleged warming has been blamed for wild weather, the melting of polar ice, disrupted ocean currents, and a number of other problems. The Preps
If Global Warming causes freak storms and long droughts, as its proponents claim, then the preps would be a combination of hurricane prepping and food shortage preparedness. The Odds
The earth's average temperature has risen 1.4 degrees F since 1980. This is a documented fact. And the temperature is a lot higher now than it was during that last ice age. Where will the temperature top out? And what climatic effects would these higher temps have? I guess we'll have to wait and see.
Space Weather
The Threat: Solar flares

Concern over solar flares, coronal mass ejections, gamma ray bursts and a variety of other "space weather" has inspired some preppers to take action and prepare for the worst. The Preps
Monstrous solar flares and CMEs certainly could impact our communication satellites and our electrical grid. Practical emergency preparedness plans for these types of scenarios should include the gathering of gear to provide your own energy and communications, along with all the normal necessities. The Odds
Next year has been predicted as an active year for solar storms and sunspots. Autumn of 2013 will be the solar maximum, which is the period of greatest solar activity in the 11-year solar cycle of the sun. This upcoming maximum should also be the smallest sunspot cycle since 1906. One NASA spokesperson called it "wimpy." We'll be able to enjoy the northern lights a bit further south, but that should be about all.
Planet X
The Threat: Nibiru will crash into earth

Stories of Planet X (a.k.a. Nibiru) have been circulating since Zecharia Sitchin published a book in 1977 titled The 12th Planet. In this book, Sitchin claimed that "ancient astronauts" from Nibiru visited the Sumerians in the distant past and taught these primitives about writing, agriculture, and advanced sciences. Some Nibiru subscribers believe that this planet will strike the earth, or cause some other kind of catastrophe. Or that our cruel alien overlords will return to enslave mankind, or perhaps feast on our succulent flesh, or steal our women and precious metals. The Preps
These preps are entertaining. Just pop some popcorn, sit back in your easy chair and watch the Ancient Aliens show on the History Channel. If it's on the History Channel, it has to be true and really have happened…right? The Odds
What do you think the odds are?
Power Down
The Threat: Loss of the power grid

Alarmingly, people from all over the world are trying to hack into the computer systems of nuclear power plants and other electric plants in the U.S., every day. What if they get lucky, get in, and shut things down? The Preps
An absence of electricity would create all kinds of communication, commerce, and transportation nightmares. But that's not the worst of it. Like many other disaster scenarios, the problem itself isn't so bad--it's peoples' reactions and behavior that cause the real trouble. I hope you have a remote cabin to hide in until the power comes back on. The Odds
This could happen somewhere, sometime. It's plausible. Thank God that there are dedicated cyber security personnel working day and night to keep these technological disasters at bay.
E.T. Comes Home
The Threat: An alien invasion

War Of The Worlds, Independence Day, Alien Versus Predator, Battle: Los Angeles, and a slew of other films show us different critters having their way with our planet. What if that really happened? The Preps
How do we fight an alien invasion? Well, it would depend on the alien. Are we actually having this conversation? I don't want to dignify this one with a response. The Odds
Until sentient life is found on other worlds, or a huge ship descends full of combative alien people, you have more pressing things to worry about.

Let's face it, the world isn't going to end on December 21. But, that doesn't mean it's not a good time to entertain the different ways the world could end. Here's 21 of the most intriguing.