Mesas that resemble alien fortresses, their striped walls a testament to the passage of time. And everywhere you look, ...

By Jessica Kutz for Inside Climate News. Broadcast version by Alex Gonzalez for Arizona News Connection reporting for the ...

You can wander through a one-room schoolhouse (suddenly, your childhood complaints about homework seem a bit silly), peek ...

John Barrasso told Fox News on Sunday he's 100% behind President-elect Trump’s promise for mass deportations of illegal ...

In a business-to-business (B2B) supply chain context, business customers who conduct unfair and socially irresponsible ...

This is a photo of Lucy. Or rather, it’s Lucy, as she was imagined by a sculptor working for a museum. Probably the National ...

More than 99% of Americans live under skies polluted by light. But dark skies at the Grand Canyon and more than 145 other ...

United Nations climate negotiators agreed on a funding formula to help developing countries cope with the effects of climate ...

NPR's Scott Simon speaks with paleoanthropologist, Donald Johanson, about the 50th anniversary of his biggest discovery, Lucy, an early human ancestor.

Negotiations at Cop29 in Baku, Azerbaijan were scheduled to finish on Friday evening but a final deal on climate finance remains elusive.

Environmental groups in Arizona say they've faced challenges in advancing environmental protections, and that could now become even harder under a second Trump presidency.

The 3.2-million-year-old fossil, discovered 50 years ago, is considered to be one of the most significant early hominin ...