
English: 
On April 26th , 1986, the world’s worst
nuclear accident occurred at the Chernobyl
Nuclear Power Plant in Ukraine.
The explosion spread radiation throughout
the area, releasing 400 times more than the
atomic bombing of Hiroshima.
In the months and years following the accident,
hundreds of thousands of people were evacuated
from their homes, some unable to ever return.
So, what happened at Chernobyl, and how bad
is it now?
On the day of the accident, nuclear operators
were in the middle of performing safety tests
when one of the reactors suffered a power
spike.
This set off a chain reaction of explosions,
and caused the reactor to rupture and catch
fire.
The explosions sent radioactive fallout into
the atmosphere, contaminating Belarus, and
much of the western Soviet Union and Europe.
More than 350,000 people were forced to evacuate
and resettle.
The accident directly killed 31 people through
fatal radiation doses or physical injury.

Undetermined: 
1986年4月26日
烏克蘭車諾比核電廠發生
史上最嚴重核子事故
爆炸導致輻射污染當地環境
輻射量比廣島原爆高出400倍
事故發生後數年
數十萬人被迫撤離家園
有些人再也沒回去過
當時究竟發生什麼事？
車諾比現況又如何？
意外發生當天
核電營運人員正在進行安全測試
一座反應器電力突然暴增
引發連環爆炸反應
導致反應爐破裂起火
爆炸讓輻射落塵進入大氣層
污染白俄羅斯、蘇聯西部及歐洲
超過35萬人被迫疏散另地安置
由於致命輻射或外傷
這起意外直接造成31人身亡

English: 
In the years since the accident, the United
Nations has attributed about 6,000 cases of
thyroid cancer in the surrounding areas to
the disaster.
However some sources have placed the number
of dead at nearly a million.
Part of the controversy surrounding the accident
stems from the delayed response and intentional
cover up of subsequent health issues.
The Soviet Union government directed doctors
to mis-categorized cases of acute radiation
poisoning as an unrelated medical condition
in order to lower the perceived effects of
the disaster.
Later, the government claimed that a radiation
exposure limit 350 times the modern US standard,
was safe, in order to repopulate contaminated
areas.
After the accident, the damaged reactor was
encased in a giant concrete sarcophagus to
prevent more radioactive spread, and is intended
to be replaced with a more robust shelter
in 2017.
The overall cleanup effort required about
half a million workers, a number of whom were
unaware of the severity of radiation, and
have since suffered from poor health or died.

Undetermined: 
事故發生後數年
聯合國在週遭地區
記錄約6000起甲狀腺癌案例
但有些資料認為
死亡人數將近百萬
這起事故引發的部分爭議在於
官方因應緩慢
又刻意掩飾後續醫療問題
蘇聯政府要求醫生
將急性輻射中毒的病例
刻意改成無關的醫療紀錄
以降低外界所見的災害效應
後來政府聲稱，輻射劑量
即便比美國現代標準高350倍
仍屬安全
希望民眾搬回污染區
災變之後，受損反應爐
封鎖在巨大水泥石棺中
避免更多輻射外洩
預計在2017年更換更安全的護罩
災害後續清理工作
需要約50萬名勞工
但有些勞工不清楚輻射外洩嚴重性
後來因此健康受損或身亡
 

Undetermined: 
今日車諾比核電廠外方圓18英里
仍屬於隔離區
總面積1000平方英里
現場如同廢棄鬼城，不准訪客進入
不過仍有約200名高齡居民
拒絕搬離
至今仍住在災變現場附近
也有少數人違法占屋居住
不過也由於禁止人類靠近
隔離區因此成為
全球一大野生動物保護區
事故發生至今已過數十年
環境與人體所受傷害無法計數
清理工作至今仍在繼續
但今日處理核子災害的技術
也都來自車諾比事件經驗
由於增加安全防範，拯救無數生命
災後反應也更加迅速
例如2011年福島核災
核能固然危險，核武更加可怕
若想知道哪些國家擁有核武
請觀賞這段影片

English: 
Today, the Chernobyl power plant is surrounded
by an 18 mile exclusion zone, covering about
1,000 square miles.
The area is essentially an abandoned ghost
town, and visitors are prohibited from entering.
However, roughly 200 elderly residents who
have refused to leave still live near the
radioactive site, along with a number of illegal
squatters.
An interesting side effect of the ban on people
is that the exclusionary zone has become one
of the world’s largest wildlife preserves.
In the decades since the accident, the damage
to both the environment and people’s health
has been incalculable, and cleanup efforts
are still in progress today.
However, much of what we know about dealing
with nuclear disasters comes from Chernobyl.
The knowledge has saved countless lives in
terms of improved safety precautions, and
responding to other disasters like Fukushima
in 2011.
Nuclear energy has its dangers, but Nuclear
weapons are far more terrifying.
To find out which countries have nuclear weapons
in their arsenal, check out our video here.

English: 
Or, if you're curious about how uranium becomes
nuclear fuel, I broke it down over on DNews
and that video is here.
Thanks for watching TestTube!
Now’s your chance to hit that subscribe
button!

Undetermined: 
若想瞭解鈾如何變成核燃料
我也在另一段影片說明
請看這裡
感謝收看，歡迎訂閱頻道
瀏覽所有影片
