In the rugged terrain where Mexico and the United States meet, a border wall is just the latest obstacle fragmenting habitats ...

You gotta try the local cuisine” — that's the advice given to any traveler headed beyond their own borders. National ...

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With all the splashing, it was hard to tell what was happening under water. As the orcas surfaced to take a breath, dolphins were darting around their heads, but the water was so murky that the ...

Fall-run Chinook salmon migrate to California's Central Valley rivers to spawn. Photo by Miles Daniels Researchers studying fall-run Chinook salmon headed to California's Central Valley rivers are ...