Located 35 miles east of Flagstaff and 6 miles south of Interstate 40, Meteor Crater and its fragments were first recognized after the discovery of iron fragments west of the crater near Canyon Diablo ...

Aden’s volcanic origins, imperial encounters and contemporary environmental struggles. Despite its remarkable natural setting, Aden today confronts mounting environmental pressures. The city Aden, ...

The same process that allows rock to flow like liquid during impact events allows 'peak rings' to form in large craters. Sixty-six million years ago, an asteroid the size of a small city smashed into ...

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