2013
24
Mar
Representative Grijalva Sponsors Legislation to Create the Great Bend of the Gila National Monument and the Santa Cruz Valley National Heritage Area
Representative Grijalva Sponsors Legislation to Create the Great Bend of the Gila National Monument and the Santa Cruz Valley National Heritage Area
Rep. Raúl M. Grijalva today introduced six bills focused on the management, conservation, and long-term stewardship of federal land in Arizona and thr...
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2012
29
Apr
The Black Mat (not) From Outer Space
The Black Mat (not) From Outer Space
A giant cosmic collision with Earth and an asteroid or comet is now the leading culprit behind the mass extinction that ended the Age of Dinosaurs about 65 million years ago. However, there is much controversy regarding whether a cosmic explosion, or something el...
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