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The machine, the biggest of its type, was digging a tunnel under the city when it went kaput. To get to and fix Bertha, workers are digging a 12-story pit, which some say is damaging nearby buildings.

A South African university launched an anti-poaching campaign Thursday to inject the horns of rhinos with radioactive isotopes that it says are harmless for the animals but can be detected by customs agents.

A proposed wind farm in Idaho that would be one of the U.S.'s largest is being opposed because it's close to a historic site — a former incarceration camp for Japanese Americans during World War II.

NPR's Steve Inskeep asks the president of a China-led development bank about the impact of the friction between the U.S. and China.

Nowhere is the nation's home buying and building binge more visible than in Las Vegas. On average, 200 new residents arrive every day needing a place to live. That has led to a rash of lawsuits over construction defects.

The Bullitt Foundation's new Seattle headquarters, billed as the world's "greenest" building, is designed to be entirely self-sustaining. The developers hope it can inspire others to build this way.

Lebanese twins Omar and Mohamed Kabbani painted "salam" — the Arabic word for peace — in bright green across 82 rooftops in the northern city of Tripoli. NPR's Ari Shapiro speaks with Omar about the ambitious art project that can only be seen from the sky.

Florida and a handful of other states declined to apply for millions of federal dollars for projects to draw down carbon emissions. Now it falls to cities to make their own climate plans.

Former President Donald Trump has a debate style all his own. It's brash and aggressive while trying to project dominance. At Thursday's presidential debate, he might be limited by a mute button.

In the 1960s, Wally Funk participated in a project intended to pave the way for female astronauts. It got canceled, but she will soon join the crew of Amazon founder Jeff Bezos' suborbital rocket.