southwest

On contemporary maps, tribal peoples in the U.S. are closely identified with particular reservation lands. But long-standing ties to land connect Native tribes with a much broader network of places.


Earth Notes: Bee Houses

Apr 20, 2016

When you hear the word "bee," you're likely to think of the hard-working insects that produce the honey we use. But in North American, a wild diversity of native bees - more than 4,000 kinds – swamps that of honeybees, which were imported from the Old World.


Travelers with a hankering to reconnect with nature and experience the Navajo way of life can do just that 12 miles south of Page.  A bear claw sign on Highway 89 points the way to the Shash Diné Eco-Retreat. “Shash” in the retreat’s name means “bear” in Navajo. 


Courtesy of thetreecenter.com

Voracious Japanese beetles are becoming frequent fliers on airlines traveling from the East Coast to the West Coast. And that’s wreaking havoc on hundreds of species of plants. Ecosystem scientist Bruce Hungate is trying to find out how the beetles are getting their boarding passes. 


For allergy sufferers, dust and pollen are an irritating part of life in the Southwest. Yet recent research reveals that these tiny particles are crucial to the formation of life-giving rains, both here and around the world. 


Ethan Miller/Getty

Most scientists today prefer the term “climate change” to “global warming,” since human-caused changes to the Earth’s atmosphere produce many changes beyond temperature. But especially in the southwestern states “warming” is an apt term too.

According to a new analysis of monitoring data by Climate Central, the U.S. is warming across the board—but to different extents in different places. And the effect varies by season, too.

Insects and the plants they pollinate have evolved to fit like a key and a lock. 


Pronghorn antelope evolved roaming across large tracts of land undivided by roads and fences. But the highways that now crisscross their grassland habitats in the Southwest form barriers to mingling and interbreeding. They’re like giant swim-lane dividers in the gene pool. 


In 2015 the EPA issued a Clean Power Plan directing states to limit carbon dioxide emissions from power plants. Under the plan, for example, Arizona will need to cut annual carbon emissions from 40 to 30 million tons by 2030.


Earth Notes: Restoring Heiser Spring

Feb 3, 2016

Life flourishes near water in the desert. From rare plants to insects that begin their lives in water to the colorful warblers that eat them, healthy springs are hotspots of biodiversity.


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