Here’s everything you need to know to plan a trip to Saguaro National Park, including the best hiking trails, things to do, ...

“They [abandoned mines] have probably been a source of significant wildlife mortality for over 100 years,” said Saguaro National Park Biologist Don Swann. “Some of these are literally vertical shafts ...

For all of its wildlife, Yellowstone National Park ... geography is everything. Arizona’s Saguaro National Park is situated in the Sonoran desert, which is known for its diversity of dangerous ...

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Climate change, drought, and fires — all caused or worsened by human activity — are rewriting the future of ancient Sonoran ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive portions of Pima County — have won a temporary reprieve.

If you're visiting in the summer, get to the park in the morning before the sun's rays get too strong. Other visitors advised of numerous snake warning signs. Saguaro National Park is located on ...

The saguaro cactus is a distinctive icon of the American ... putting stress on plants and wildlife. At Mount Rainier National Park, hotter, drier summers and reduced snowpack could significantly ...

“We like for them to have as many arms as they can get away with,” said Don Swann, a biologist at Saguaro National Park and the co-author of several research papers on the park’s namesake. The cacti’s ...

the U.S. Bureau of Reclamation and the National Park Service. Their concerns include increased suburban sprawl, groundwater contamination, and degrading the wilderness, wildlife habitat and ...