Biology

175 articles with this tag

How Tidally Locked Planets Work—Eternal Day Meets Night Science

How Tidally Locked Planets Work—Eternal Day Meets Night

Tidally locked planets keep one face permanently turned toward their star, creating a world split between scorching daylight and frozen darkness. Scie...

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How Salmon Find Their Way Home—Thousands of Miles Science

How Salmon Find Their Way Home—Thousands of Miles

Salmon navigate thousands of miles of open ocean and return to the exact stream where they were born using a dual navigation system: Earth's magnetic...

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How Microplastics Enter Your Body—and What They Do Science

How Microplastics Enter Your Body—and What They Do

Microplastics reach the human body through food, water, and air, accumulating in organs from the lungs to the brain. Here's what science knows about h...

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How Measles Works—the Most Contagious Virus Known Health

How Measles Works—the Most Contagious Virus Known

Measles is the most contagious disease known to science, with each infected person spreading it to 12–18 others. Beyond its immediate symptoms, it cau...

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How Microbial Fuel Cells Work—Electricity From Dirt Science

How Microbial Fuel Cells Work—Electricity From Dirt

Microbial fuel cells harness bacteria that naturally release electrons as they digest organic matter, turning soil and wastewater into small but stead...

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What Is the Goldilocks Zone—and How It Guides the Search for Life Science

What Is the Goldilocks Zone—and How It Guides the Search for Life

The habitable zone, or Goldilocks zone, is the region around a star where liquid water could exist on a planet's surface. Understanding how scientists...

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How Brain Organoids Work—Mini Brains Grown in a Lab Science

How Brain Organoids Work—Mini Brains Grown in a Lab

Brain organoids are pea-sized clusters of human neural tissue grown from stem cells. They mimic early brain development and are transforming research...

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How Humans Are Still Evolving—Faster Than Expected Science

How Humans Are Still Evolving—Faster Than Expected

A landmark study of 16,000 ancient genomes reveals that natural selection has accelerated in humans since the dawn of agriculture, shaping traits from...

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What Are Zombie Cells—and How They Drive Aging Science

What Are Zombie Cells—and How They Drive Aging

Senescent 'zombie' cells stop dividing but refuse to die, flooding tissues with inflammatory signals that accelerate aging and disease. Scientists are...

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How Ancient DNA Analysis Works—and What It Reveals Science

How Ancient DNA Analysis Works—and What It Reveals

Scientists extract and sequence degraded genetic material from bones thousands of years old, rewriting human history and revealing lost populations, e...

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How Mammals Stopped Laying Eggs—the Long Road Science

How Mammals Stopped Laying Eggs—the Long Road

All mammals descend from egg-laying ancestors called synapsids. Here's how the transition from leathery eggs to live birth unfolded over 300 million y...

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How Bioluminescence Works—Nature's Cold Light Science

How Bioluminescence Works—Nature's Cold Light

Bioluminescence lets organisms produce their own light through a chemical reaction between luciferin and luciferase. From deep-sea creatures to firefl...

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