人工智能
Artificial Intelligence
由于科技开始学习自我思考并适应环境，人类正面临着一个不确定的未来。
Humanity faces an uncertain future as technology learns to think for itself and adapt to its environment.
英国剑桥大学存在风险研究中心（CESR）外聘顾问尼克?博斯特罗姆预言，到2075年机器的智力水平将达到人类的90%。
Nick Bostrom, an outside adviser to Cambridge University's Study of Existential Risk (CESR), predicts that machines will attain 90 percent of human-level intelligence by 2075.
如果机器的发展超出我们的理解和掌控，那么其对于人类的威胁可以与核武器的诞生相提并论。
The threat posed to the human race if they developed beyond our understanding and control has been compared to the development of nuclear weapons.
CESR认为，人工智能在不久的将来可能对人类生存构成众多威胁，所以将其列为高优先级的威胁。
CESR believe that artificial intelligence could create a multitude of risks that threaten human existence in the near future, as so place it as a very high priority.
生物黑客
Bio-hacking
从治疗疾病到清除污染，合成生物学有朝一日会让无所不能的超级细菌变成现实。
Superbugs capable of everything from curing diseases to mopping up pollution could one day become reality, through synthetic biology.
但是生物工程试验可能带来意想不到且极其危险的后果，而CESR则认为其危险性极高。
But experiments with bio-engineering could have unexpected and extremely dangerous results and are being been given a very high priority by CESR.
目前，病毒试验等可自我复制微生物试验可能使此类物质从实验室泄露，这会引发全球性疾病，此类情形极有可能发生。
As current experiments work with self-replicating micro-organisms, like viruses, there is a high risk that any such material that escaped the lab could cause a global pandemic.
机器人杀手
Killer robots
全自动武器也被称为“机器人杀手”，它正迅速从科幻小说走向现实世界。
Fully autonomous weapons, also known as 'killer robots,' are quickly moving from the realm of science fiction toward reality.
当机器在做出生死决定时不受人类控制，在决定目标时将人类排除在外，世界将变得非常危险。
Removing humans from the targeting decision would create a dangerous world, with machines making life-and-death determinations outside of human control.
而更加让人担心的是机器人杀手有一天可能会背叛他们的缔造者，不过，CESR认为目前机器人杀手的风险等级相对较低。
And there are greater fears that killer robots could one day turn against their creators, although CESR feels that this threat is currently a low priority.
核战争
Nuclear war
目前，地球上存在的核武器超过15000枚，但是只需要引爆100枚核武器就可以让地球进入灾难性的核冬天。
There are now more than 15,000 nuclear weapons on this planet, but to plunge Earth into a devastating nuclear winter, all it would take is the detonation of 100.
虽然核爆炸本身就会造成灾难性的破坏，但科学家预测随之而来的核冬天同样威力十足。
While the bombs themselves would cause catastrophic damage, the scientists predicted the ensuing nuclear winter would be just as significant.
CESR将核战争的风险等级列为中低等。
The CESR rates it as a low to medium risk priority.
气候变化
Climate change
化石燃料燃烧释放的二氧化碳以及其他“温室气体”的浓度以惊人的速度增加，厚厚地笼罩在地球周围、吸收多余热量、导致全球气温上升。
Concentrations of carbon dioxide, released when fossil fuels are burned, as well as other 'greenhouse gases', have risen at an alarming rate, forming a thick blanket around Earth, trapping excess heat and nudging global temperatures upwards.
科学家们提醒，温度超过某个临界点问题将无法挽回。
Scientists warn of a tipping point - a temperature beyond which the problem can no longer be dialled back.
如果气温一旦达到了这个临界点，那么失控的温室效应将会使气温飙升到几百摄氏度，让海水沸腾，地球上将无法生存。
If we reach this point, a runaway greenhouse effect would cause temperatures to soar to several hundred degrees Celsius, boiling the oceans and making life on Earth impossible.
不过，CESR也将气候变化的风险等级列为中低等。
However the CESR rates climate change as another low to medium risk priority.
小行星撞击
Asteroid impact
虽然小行星时不时就会与地球相交，但是“令恐龙灭绝”的声名狼藉的小行星直径有1万米，这种小行星非常罕见，一颗体积仅为其1/5的小行星就能给人类文明带来一场浩劫。
From time to time Asteroids cross paths with us and, while impacts on the scale of the infamous 6.2-mile (10km) 'dinosaur-destroyer' are rare, an asteroid a fifth the size could spell disaster for civilisation.
小行星撞击的能量比1000万枚投放在广岛的原子弹还要强，带来的冲击将把方圆300公里夷为平地。
With energy greater than 10 million Hiroshima bombs, the impact shock would flatten everything within a 186-mile (300km) radius.
然而，CESR认为这种情况的可能性较低。
However, the CESR rate this as a low risk priority.
现实是幻觉
Reality is an illusion
长期以来，哲学家们一直通过思想实验来检验人的内在“自我”和外在“现实”之间的相互作用的本质，他们对人类在多大程度上可以相信自己的感官提出了疑问。
Philosophers have long posed thought experiments to examine the nature the interaction between our internal 'self' and external 'reality', questioning how much we can trust the evidence of our senses.
科学家、哲学家、甚至商界都在认真思考这样一种观点，即人类认为的“真实”世界实际上是虚拟的，不过这种观点基本上仍然停留在科幻小说中。
While still largely the preserve of science fiction, the idea that the world we experience as 'real' is actually just a simulation is still given serious thought by scientists, philosophers, and even businesses.
人类是否能够确定这一观点的真实性仍然是一个备受争议的话题，因此，CESR不太重视这种说法。
Whether we will ever be able to determine if this is the case remains a much debated topic, and as such, it is a low area of interest for the CESR.
粮食短缺
Food shortages
一份报告称，由于气候变化的原因，世界粮食短缺的可能性将翻三倍。而国际社会需要做好准备应对粮价冲击，以防动荡。
Global food shortages will become three times more likely as a result of climate change, according to one report, and the international community needs to be ready to respond to price shocks to prevent civil unrest.
报告称，到2050年世界人口数量将从现在的73亿增加至90亿，粮食产量的增长因此需要超过60%，而气候问题导致的市场混乱可能引发动荡。
With the world's population set to rise to nine billion by 2050 from 7.3 billion today, food production will need to increase by more than 60 percent and climate-linked market disruptions could lead to civil unrest, the report said.
CESR认为粮食短缺是另一项可能性很高的威胁。
This another high priority area for the CESR.
粒子加速器
Particle accelerator
另外一种关于地球命运的不太可能的可能性是超级对撞机实验可能意外毁灭地球。
Another improbable possibility raised as a concern to the future existence of the planet is that supercollider experiments could accidentally destroy planet Earth.
CESR的专家认为这种情况发生的风险极低。
Experts at the CESR rate the risk of this happening as very low.