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Take a quick tour of the worldâs largest pothole. Click play below. The worldâs largest pothole also happens to be the most popular pothole in Pennsylvania. But, Archbald Pothole isnât the only natural wonder in Pennsylvania. Check out this natural phenomenon in Pennsylvania that will absolutely blow you away. Click here to read more.
Largest-ever Ozone Hole over Antarctica. A NASA instrument has detected an Antarctic ozone hole (what scientists call an ozone depletion area) that is three times larger than the entire land mass of the United Statesâthe largest such area ever observed. The hole expanded to a record size of approximately 11 million square miles (28.3 million square kilometers) on Sept. 3, 2000. The previous record was approximately 10.5 million square miles (27.2 million square km) on Sept. 19, 1998. The ozone hole's size currently has ...