David Schechter is a national environmental correspondent and the host of "On the Dot with David Schechter," a guided journey to explore how we're changing the earth and earth is changing us. Senior ...

Pick a sunny day. Drive down Mule Pass just outside of Bisbee. Go through the tunnel. Find the trail that starts under a tree. Trek up Mount Ballard 7,000 feet, and look carefully. There, in the ...

"They're not there," he said. "It seems like the species is now extinct." Yarrow's spiny lizards may be extinct in the Mule Mountains of Arizona after living there for 3 million years. / Credit: ...

A genetically distinct population of Yarrow's spiny lizard in Arizona's Mule Mountains is facing local extinction due to climate change. Conservationists have petitioned to list the lizard as a ...