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The government shutdown's strain on air traffic control has not only led to limitations on airlines, but spaceflight too.

In northeast Laos, close to the mountainous country's border with Vietnam, sits a sheer cliff nearly four times as tall as the Willis Tower. Known as Phou Pha Thi and considered sacred by local communities, it's where the ...

Payments through SNAP, the federal food assistance program, have been delayed during the government shutdown, but program cuts in this summer's budget bill already put vulnerable families at long-term risk of going hungry.

At its deepest physical foundations, the world appears to be nonlocal: particles separated in space behave not as independent quantum systems, but as parts of a single one. Polish physicists have now shown that such nonlocality—arising ...

Artificial intelligence (AI) systems, particularly artificial neural networks, have proved to be highly promising tools for uncovering patterns in large amounts of data that would otherwise be difficult to detect. Over the ...

For obvious reasons, we do not know what the inside of a black hole looks like. But thanks to theoretical physics, we can ask what the inside should look like if Einstein's theory of gravity and the rules of quantum mechanics ...

When Britain abolished slavery in its empire in 1833, it paid the equivalent of hundreds of billions today in compensation—not to the enslaved, but to the slave owners. It was an imperfect, morally uneasy compromise, but ...

In 2023, astronomers detected a huge collision. Two unprecedentedly massive black holes had crashed an estimated 7 billion light-years away. The enormous masses and extreme spins of the black holes puzzled astronomers. Black ...

In the last decade, armed drones have become one of the most visible symbols of modern warfare. Once the preserve of advanced militaries, armed drones are now widely available on the global arms market. Countries such as ...

In the dense forests of northwestern Pennsylvania, hundreds of thousands of retired oil and gas wells—some dating back to the mid-1800s, long before modern construction standards—dot the landscape, according to geochemists ...

Ten years on from the landmark Paris Agreement, countries have taken big strides in limiting emissions and the clean energy transition is accelerating rapidly. But geopolitical headwinds are growing and the damage bill for ...

During a severe drought and heat wave in 2023, Amazonian lakes reached their highest recorded temperatures. Water temperatures in some areas climbed to an astonishing 41 degrees Celsius (105.8 degrees Fahrenheit) and resulted ...