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11 Ways The World Could End

Since the 1500s, there have been more than150 documented predictions of when the world is going to end. Luckily for us, none of themhave come true…yet. However, you'll be surprised that not allof them are destructive. Here are some terrifyingly amazing ways theworld, genuinely could end. When you think of scientists working on superviruses, you probably picture Hazmat workers, deep in a mountain bunker, studying vats fullof insidious green liquid. But these labs do actually exist! Maybe notworking for some shady Bondstyle villain looking to ransom the world away to the highestbidder, but for pharmaceutical companies and

government agencies studying ways to curedangerous pathogens. But what happens when a vial full of an extremely dangerous virusbreaks out of containment, or is misplacedé Over the years, there have been numerous documentedcases of dangerous viruses escaping from laboratories around the world. One of these happened asrecently as 2009. A group of scientists based in Europe, workingwith Baxter Pharmaceuticals, were conducting lab tests on a seasonal flu strain.Without realizing it, Baxter had sent them live supplies of the H5N1 virus, better knownas “bird flu,â€� which has a mortality rate higher than 60%. One of the world's deadliestviruses was handled and distributed to three

other labs without any pathogen safety protocolsin place. The grave error was only realized when onelab worker in the Czech Republic inoculated a group of ferrets with samples of the “seasonflu� batch, and was horrified when they all died.The scientists were immediately placed under quarantine and monitored for signs of thedeadly virus. Luckily, none of them were infected and all the scientists were freed with a cleanbill of health. Two years later, these same strains of avianand human flu were combined in a laboratory, successfully creating “the most dangerousvirus in history.� The virus was highly

pathogenic, while retaining its dangerouslyhigh fatality rate. If it got loose, it could kill 60% of the world's population in afreakishly short amount of time – a truly apocalyptic notion.Some say it's only a matter of time before this kind of virus escapes containment andwreaks havoc on mankind. After going through two world wars, you wouldthink that the world would have learned to get along by now. But unfortunately for thesurvival of humanity, we are constantly under threat of triggering the final war – NuclearArmageddon. Mutually Assured Destruction, like its acronymsuggests, is one of the maddest doctrines

ever devised. It ensures that if a countrywere to ever use a nuclear weapon on another state with the same capability, both sideswould unleash their entire nuclear arsenal, bringing about the complete annihilation ofboth countries. With the resulting nuclear winter, and the likely participation of othercountries in the exchange, this would almost certainly lead to destruction and death onan apocalyptic scale. There are over 15,000 nuclear warheads inthe world, with more than 4000 ready to fire at any one time. That would make one hellof a firework show, but probably not one you'd want to be around to watch.There have been a few “close calls� since

we first developed nuclear weapons. A surprisingnumber of these were technical glitches that nearly started World War 3, on both sidesof the Cold War. The average yield of a modern nuclear weaponis around 500 kilotons of TNT, that's 25 times more powerful than the bomb droppedon Nagasaki. Each one of these 500 kiloton bombs are powerful enough to flatten hugeparts of a large modern city such as New York, or London.And there exists some truly unimaginably powerful weapons, like the Tsar Bomba, which had ayield of more than 50 megatonnes. That's two and a half THOUSAND times more powerfulthan the one dropped on Nagasaki. Thankfully

Space Science Documentary End of the Earth Science Channel

Earth, the only lifesustainingplanet in our Solar System. Yet throughout its history our worldhas been a planetary punching bag. Anything that crosses the orbit of Earth could one day slam into the Earth. At this very moment, violent celestialheavyweights roam the Universe and threaten to deal theEarth a knockout blow. The power would be like setting offthe whole world's armament at one time, and would be like standing nextto Hiroshima all over the world.

Everything in us would get ripped apart and all of your bodywould fly off to infinity. But some scientistsand former astronauts are not willing to godown without a fight. They're racing to trackdown these cosmic killers before they trigger Armageddon. Earth, shimmers like a sapphirejewel in our Solar System. We go about our days,

unaware that, in thefar reaches of space, trouble could be headed our way. Our Solar System is a lotlike an amusement park. Earth and most of the other objectscarve predictable paths around the Sun. Normally everything is calm and smooth, but at times thingsget chaotic and violent. Earth can be slammed by space rocks,zapped by deadly space weather, jolted, jostled and threatened

by the objects' energyand forces of the cosmic. The Earth is on a cosmic thrill ride, one that often involves extreme danger. When you're moving fast inon a predetermined path, you hope nothing crosses, becausethere's nothing you can do. lt;igt;Nicaraguan border is right down along.lt;igt; Former astronaut RustySchweickart knows first hand how dangerous celestial objects can be.

In 1969 he piloted the lunarmodule during the Apollo 9 mission. Now Schweickart is ready formore than a cruise to the cosmos. He's sounding alarms about thedangers of one particular asteroid, named Apophis, which got too close for comfort in 2004. He had immediately goteverybody's attention, because the probability ofimpact was quite high. In fact it was higherthan any impact probability

that we had ever seenup until that time. And Schweickart has a terrifyingreal life example of just how damaging an impact from an asteroid, evensmaller than Apophis, could be. June 30th 1908, 7:15 AM. An object, half thesize of a football field, plunged down from space ataround 34,000 miles per hour. And produced a streamof fiery gas behind it. Within minutes, the fireballentered our atmosphere,

When Will Time End

Time is flying by on this busy, crowded planetas life changes and evolves from second to second. At the same time, the arc of the humanlifespan is getting longer: 67 years is the global average, up from just 20 years in theStone Age. Modern science provides a humbling perspective.Our lives, indeed even that of the human species, are just a blip compared to the Earth, at4.5 billion years and counting, and the universe, at 13.7 billion years. It now appears the entire cosmos is livingon borrowed time. It may be a blip within a much grander sweep of time. When, we nowask, will time endé

Our lives are governed by cycles of wakingand sleeping, the seasons, birth and death. Understanding time in cyclical terms connectsus to the natural world, but it does not answer the questions of science. What explains Earth's past, its geologicaleras and its ancient creaturesé And where did our world come fromé How and when willit endé In the revolutions spawned by Copernicus and Darwin, we began to see time as an arrow,in a universe that's always changing. The 19th century physicist, Ludwig Boltzmann,found a law he believed governed the flight of Time's arrow. Entropy, based on the 2ndlaw of thermodynamics, holds that states of

disorder tend to increase. From neat, orderly starting points, the elements,living things, the earth, the sun, the galaxy. are all headed eventually to states of highentropy or disorder. Nature fights this inevitable disintegration by constantly reassemblingmatter and energy into lower states of entropy in cycles of death and rebirth. Will entropy someday win the battle and putthe breaks on time's arrowé Or will time, stubbornly, keep moving forwardé We are observers, and pawns, in this cosmicconflict. We seek mastery of time's workings,

even as the clock ticks down to our own certainend. Our windows into the nature of time are the mechanisms we use to chart and measurea changing universe, from the mechanical clocks of old, to the decay of radioactive elements,or telescopes that measure the speed of distant objects. Our lives move in sync with the 24hour day,the time it takes the Earth to rotate once. Well, it's actually 23 hours, 56 minutesand 4.1 seconds if you're judging by the stars, not the sun. Earth got its spin atthe time of its birth, from the bombardment of rocks and dust that formed it. But it'sgradually losing it to drag from the moon's

gravity. That's why, in the time of the dinosaurs,a year was 370 days, and why we have to add a leap second to our clocks about every 18months. In a few hundred million years, we'll gain a whole hour. The daynight cycle is so reliable that ithas come to regulate our internal chemistry. The fading rays of the sun, picked up by ourretinas, set our socalled “circadian rhythms� in motion. That's when our brains beginto secrete melatonin, a hormone that tells our bodies to get ready for sleep.

Finally, in the light of morning, the flowof melatonin stops. Our blood pressure spikes… body temperature and heart rate rise as wemove out into the world. Our days, and our lives, are short in cosmic terms. But withour minds, we have learned to follow time's trail out to longer and longer intervals. We know from precise measurements that theEarth goes around the sun every 365.256366 days. Much of the solar energy that hits ourplanet is reflected back to space or absorbed by dust and clouds. The rest sets our planetin motion. You can see it in the ebb and flow of heatin the tropical oceans, the annual melting

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