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Julio Betancourt

New doubt is cast on comet as big-animal killer

An international team of geologists has cast further doubt on a 2007 study that claimed a comet was responsible for the disappearance of the giant mammals that once roamed Arizona and the people who hunted them.

April 26, 2012 12:00 amLoading…
Flow of Anglos had reshaped the city by statehood

Flow of Anglos had reshaped the city by statehood

Tucson was born Spanish and raised Mexican - but by the time it joined the Union in 1912, it was well on its way to being a thoroughly American and mostly Anglo town.

February 12, 2012 12:00 am Photos


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