Nuclear or biological warfare / 核生物战
Given the rate at which we have advanced and improved arsenals, post the World Wars, it is quite understandable and agreeable that another World War would post a serious threat to human existence. The effect of the nuclear, chemical and biological weapons combines, used at a mass level should very much be the cause of human extinction.
鉴于我们采用先进和改进的武器库的速度，发布世界大战后，另一场世界大战将对人类生存构成严重威胁是非常可以理解和认同的。组合使用的核，化学和生物武器的结果应该是人类灭绝的原因。
Watch entire documentary :
pandemic / 流感大流行
There could be a human-only pandemic, involving one or more viruses, prions, or antibiotic-resistant bacteria, causing colossal and catastrophic loss of life
However, more deadly and most likely to cause the wipe out of the human race would be a pathogen with a wide host range in multiple species that could reach even isolated humans by using insects or other animals as "carriers".
可能是一个仅人类的大流行病，涉及一种或多种病毒，朊病毒或抗生素抗性细菌，造成巨大的灾难性的生命损失
然而，更致命和最可能导致人类灭绝的病原体将是多种物种的广泛宿主范围的病原体，可以通过使用昆虫或其他动物作为“载体”来达到甚至孤立的人类。
Future of the earth / 地球的未来
Due to Sun brightening, the earth's oceans shall disappear in about a billion years. Also, way before that, the food chain shall be disrupted, due to the lowered Carbon Dioxide value in the atmosphere, thereby not being able to support plant life.
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由于太阳光亮，大地海洋将在十几年内消失。此外，由于大气中的二氧化碳值降低，食品链应该被破坏，从而无法支持植物生命。
Creation of a Black Hole / 创造一个黑洞
There have been lots of prediction and speculations involving the Large Hardon collider at CERN, mostly attached with the fear of protons colliding at a speed near the speed of light, resulting in the creation of black hole.
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已经有很多关于CERN的大型Hardon对撞机的预测和猜测，大多数都是以质子碰撞的速度接近光速，导致黑洞的产生。
It has been pointed out that much more energetic collisions take place currently in Earth's atmosphere
有人指出，地球大气层正在发生更多的精力充沛的碰撞
Stephen hawking explained about black holes :
Alien Invasion / 外来入侵
An attack on the humans, by an advanced species of extraterrestrials, could result in the human extinction
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对人类的攻击，由先进的外星人物种可能会导致人类的灭绝
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Thank You!
Hi! I am a robot. I just upvoted you! I found similar content that readers might be interested in:
https://www.quora.com/What-is-likely-to-be-the-ultimate-reason-for-the-extinction-of-humans-on-earth
The nuclear war and the bio weapon is the only reason I know why human go to its extinction level. Alien invasion and the blackhole has a little chance to happen
We don't know about what kind of research they are doing in Area 51 some say aliens are working with humans to develop some powerful weapon and also some spaceships are spotted there @cloudspyder
Black hole will have a less chance we can't say when it will happen
My recent post #Facts about Area 51
https://steemit.com/cn/@saimegh/facts-and-secrets-about-area-51-51
@saimegh, alien is real. They are everywhere, Mother Russia is very transparent on that. The US has a report of alien abduction in the past. Besides, our Chinese airforce and our blue navy in the past year scramble a jet to intercept anomaly of UFO somewhere in South China Sea. Alien is already here, they seems to be friendly
The land will end of course. But during that time there will be no life of any kind on its surface and this is also certain
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This post recieved an upvote from minnowpond. If you would like to recieve upvotes from minnowpond on all your posts, simply FOLLOW @minnowpond Please consider upvoting this comment as this project is supported only by your upvotes!
Reasons?!?! The reason tell me we have to LIVE. The causes of death can be many but NO reasons!!
You are right @digitalplayer we are misusing resources and increasing global warming ...
Best way to know more about end of earth see Stephen hawking statements . You will be definitely shock by listening those words 😋
I will take a look to Stephen Hawking. Thank you for the report
You are welcome
Stephen hawking statements : you have only 100years to survive on this eartg. If you want to live start searching for new planet or else you all are going to die and believe me his words are never wrong 😊
This post has received a 0.39 % upvote from @drotto thanks to: @banjo.
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