Opinion
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Was it a stone tool or just a rock? An archaeologist explains how scientists can tell the difference
By John K. Murray published
Opinion With a little guidance and a lot of practice, even you can make stone tools the way our oldest ancestors did — and learn to recognize the signs of a deliberately made tool.

'Murder prediction' algorithms echo some of Stalin's most horrific policies — governments are treading a very dangerous line in pursuing them
By Akhil Bhardwaj published
Opinion The U.K. government is developing a program that seeks to identify murderers before they commit the ultimate crime. The real-world application of this type of tool will have devastating consequences.

What does it take for people to flourish?
By Victor Counted, Byron R. Johnson, Tyler J. VanderWeele published
OPINION A global study seeks insights into what helps people feel happy, healthy and satisfied — and what holds them back.

Climate wars are approaching — and they will redefine global conflict
By Topher McDougal published
Opinion Climate change's profound reshaping of conflict dynamics is already underway. The question facing humanity now is not whether we will confront these pressures, but how we will choose to do so.

Colors are universal — even if our perception of them is subjective
By Elay Shech, Michael Watkins published
Opinion An object's color appears differently under different lighting and against different backgrounds — for different viewers. But that doesn't mean colors are subjective.

Human ancestor was in Eurasia nearly 2 million years ago, cut marks on animal bones suggest
By Briana Pobiner, Sabrina Curran, Virgil Drãgușin published
Opinion Researchers reexamining fossils identified telltale marks made by human ancestors cutting meat from bones. The discovery pushes back the date hominins started living in Europe by 200,000 years.

How will the latest generation of fighter jets stand out? The answer lies in stealth tech.
By David Bacci published
Opinion The fighter jets are likely to incorporate AI, as well as advanced engine and stealth technology.

TSMC's upcoming 2nm microchip is a breakthrough. Here's what it means for the future of tech — from AI to smartphones.
By Domenico Vicinanza published
Opinion Taiwanese manufacturer TSMC will begin producing the chips from the second half of this year.
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