Daimler's self-driving big rig makes big entrance in Nevada

Its name is "Inspiration" and Daimler Trucks says it's the first ever self-driving semi-truck licensed to drive on public roads—in this case Nevada's highways—not only for testing, but business, too.

America's new wonder: a record-breaking bridge

America's greatest technological achievement, the Hoover Dam, now has a soaring companion piece, a massive looming bridge held up by the longest arch in the Western Hemisphere.

US mega drought makes boating rough on Lake Mead

In the 15 years since Adam Dailey began boating on Lake Mead, the shoreline has receded hundreds of meters, the result of more than two decades of punishing drought that is drying out the western United States.

US formally removes Colorado River fish's endangered status

The humpback chub, a rare fish found only in the Colorado River basin, has been brought back from the brink of extinction after decades of protection, though work must continue to ensure its survival, federal authorities ...

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