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...or4=Nash, Cody Z. |date=2005 |title=The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis |url=http:// ...le=Ferruginous Conditions: A Dominant Feature of the Ocean through Earth's History |journal=Elements |volume=7 |issue=2 |pages=107–112 |doi=10.2113/gselements ...

...olcanic]] and [[Tectonics|tectonic]] terrains suggest a complex geological history. Because Triton's surface indicates a long history of melting, models of its interior posit that Triton is differentiated, lik ...

...q, promoted discussions that led to the 2015 [[Paris Agreement]] on global climate change, oversaw and ultimately apologized for the deadly [[Kunduz hospital ...tunity that Hawaii offered — to experience a variety of cultures in a climate of mutual respect — became an integral part of my world view, and a ba ...