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*[[Snowball Earth]], twice, [[Huronian glaciation|2.4–2.1 billion years ago]] and 790–630 million years ago
 
*[[Snowball Earth]], twice, [[Huronian glaciation|2.4–2.1 billion years ago]] and 790–630 million years ago
雪球化地球,两次(<font color="#ff8000"> 休伦冰河时期Huronian glaciation</font>|24亿年前到21亿年前,7.96亿年前到6.3亿年前)
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雪球化地球,两次('''<font color="#ff8000"> 休伦冰河时期Huronian glaciation</font>'''|24亿年前到21亿年前,7.96亿年前到6.3亿年前)
       
*At least five putative [[hydrogen sulfide]]-induced mass extinctions, such as the [[Permian–Triassic extinction event|Great Dying]], {{Ma|252.28}}
 
*At least five putative [[hydrogen sulfide]]-induced mass extinctions, such as the [[Permian–Triassic extinction event|Great Dying]], {{Ma|252.28}}
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至少五次公认的硫化氢导致的大灭绝,比如<font color="#ff8000"> 二叠纪-三叠纪灭绝事件Permian–Triassic extinction event</font>
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至少五次公认的硫化氢导致的大灭绝,比如'''<font color="#ff8000"> 二叠纪-三叠纪灭绝事件Permian–Triassic extinction event</font>'''
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The list does not include the Cretaceous–Paleogene extinction event, since this was, at least partially, externally induced by a meteor impact.
 
The list does not include the Cretaceous–Paleogene extinction event, since this was, at least partially, externally induced by a meteor impact.
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这份名单不包括<font color="#ff8000"> 白垩纪-古近纪大灭绝事件Cretaceous–Paleogene extinction event</font>,因为这次至少部分是由流星撞击引起的。
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这份名单不包括'''<font color="#ff8000"> 白垩纪-古近纪大灭绝事件Cretaceous–Paleogene extinction event</font>''',因为这次事件至少部分是由流星撞击引起的。
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*[[Fermi paradox]]
 
*[[Fermi paradox]]
<font color="#ff8000"> 费米悖论</font>
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'''<font color="#ff8000"> 费米悖论</font>'''
     
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