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How Light Pollution Works—and Why It's Erasing Stars
Science

How Light Pollution Works—and Why It's Erasing Stars

Artificial light at night creates skyglow, disrupts wildlife, suppresses melatonin, and has brightened Earth's nights by 16% since 2014. Here's how it works and what can be done.

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Latest articles

How Cluster Munitions Work—and Why 112 Nations Ban Them Science

How Cluster Munitions Work—and Why 112 Nations Ban Them

Cluster munitions scatter hundreds of explosive submunitions across wide areas. Their high failure rates turn battlefields into minefields for decades...

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How Scientists Map the Brain's Wiring Science

How Scientists Map the Brain's Wiring

Connectomics is the science of mapping every neural connection in a brain. From the 302-neuron worm mapped in the 1980s to the fruit fly's 130,000 neu...

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How the Brain's Glymphatic System Cleans Itself Science

How the Brain's Glymphatic System Cleans Itself

The glymphatic system is a recently discovered waste-clearance network that flushes toxic proteins from the brain during sleep, with major implication...

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How Humans First Reached Australia by Sea 60,000 Years Ago Science

How Humans First Reached Australia by Sea 60,000 Years Ago

Aboriginal Australians are Earth's oldest civilization outside Africa. Reaching their continent required crossing open ocean on simple rafts — the ear...

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What Are PFAS and Why Are They Called Forever Chemicals? Science

What Are PFAS and Why Are They Called Forever Chemicals?

PFAS are a vast family of synthetic chemicals found in everything from cookware to drinking water. Their near-indestructible carbon-fluorine bonds let...

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How Ceasefires Work—and Why Most of Them Fail Economy

How Ceasefires Work—and Why Most of Them Fail

Ceasefires are meant to halt fighting and open the door to peace, but roughly 80 percent collapse. Here's how they are negotiated, monitored, and why...

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How Vietnam's One-Party Political System Works Culture

How Vietnam's One-Party Political System Works

Vietnam is governed by a unique political system where the Communist Party holds all power through a collective leadership model known as the 'four pi...

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How Pretend Play Works—and Why Apes Do It Too Science

How Pretend Play Works—and Why Apes Do It Too

Pretend play was long considered uniquely human, but a landmark bonobo study suggests imagination evolved millions of years ago. Here's how make-belie...

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How Memristors Work—and Why They Could Transform AI Technology

How Memristors Work—and Why They Could Transform AI

Memristors are the long-theorized fourth fundamental circuit element that can store data and compute simultaneously. A recent breakthrough in extreme-...

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How Foldable Phone Screens Work—and Why They Crease Technology

How Foldable Phone Screens Work—and Why They Crease

Foldable smartphones rely on flexible OLED panels, ultra-thin glass, and precision hinges to bend without breaking — but eliminating the visible creas...

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How Quantum Decoherence Works—and Why It Limits Computing Science

How Quantum Decoherence Works—and Why It Limits Computing

Quantum decoherence is the process by which qubits lose their quantum properties through environmental interaction, and it remains the single biggest...

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