Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family. ...

Climate change is, simply, the greatest collective challenge we face as a human family. (Ban Ki-moon)

Ban Ki-moon Quotes Pictures

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.

Ban Ki-moon Quotes: Climate change is, simply, the greatest collective challenge we face as a human family.